./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 13:26:45,190 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 13:26:45,263 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 13:26:45,268 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 13:26:45,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 13:26:45,291 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 13:26:45,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 13:26:45,292 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 13:26:45,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 13:26:45,295 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 13:26:45,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 13:26:45,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 13:26:45,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 13:26:45,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 13:26:45,298 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 13:26:45,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 13:26:45,298 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 13:26:45,299 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 13:26:45,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 13:26:45,299 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 13:26:45,299 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 13:26:45,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 13:26:45,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 13:26:45,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 13:26:45,300 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 13:26:45,301 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 13:26:45,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 13:26:45,301 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 13:26:45,302 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 13:26:45,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 13:26:45,303 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 13:26:45,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 13:26:45,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:26:45,303 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 13:26:45,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 13:26:45,304 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 13:26:45,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 13:26:45,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 13:26:45,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 13:26:45,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 13:26:45,305 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 13:26:45,305 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 13:26:45,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 13:26:45,305 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 13:26:45,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 13:26:45,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 13:26:45,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 13:26:45,545 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 13:26:45,546 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 13:26:45,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-14 13:26:45,714 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 13:26:45,715 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 13:26:45,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:26:46,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 13:26:46,878 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 13:26:46,878 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:26:46,895 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/543a29db2/63e1a15bebb64ca3b00977eac8157140/FLAG4c6cfd5d6 [2024-06-14 13:26:46,905 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/543a29db2/63e1a15bebb64ca3b00977eac8157140 [2024-06-14 13:26:46,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 13:26:46,906 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 13:26:46,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 13:26:46,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 13:26:46,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 13:26:46,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:26:45" (1/2) ... [2024-06-14 13:26:46,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e4ba6d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:46, skipping insertion in model container [2024-06-14 13:26:46,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:26:45" (1/2) ... [2024-06-14 13:26:46,915 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@329d9116 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:46, skipping insertion in model container [2024-06-14 13:26:46,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:26:46" (2/2) ... [2024-06-14 13:26:46,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e4ba6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:46, skipping insertion in model container [2024-06-14 13:26:46,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:26:46" (2/2) ... [2024-06-14 13:26:46,916 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 13:26:47,020 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 13:26:47,021 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] ((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1))) [2024-06-14 13:26:47,021 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] ((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1))) [2024-06-14 13:26:47,021 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ((((((((((((((((((! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1))) [2024-06-14 13:26:47,022 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 13:26:47,022 INFO L106 edCorrectnessWitness]: ghost_update [L834-L834] multithreaded = 1; [2024-06-14 13:26:47,051 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 13:26:47,353 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:26:47,363 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 13:26:47,470 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:26:47,509 INFO L206 MainTranslator]: Completed translation [2024-06-14 13:26:47,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:47 WrapperNode [2024-06-14 13:26:47,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 13:26:47,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 13:26:47,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 13:26:47,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 13:26:47,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:47" (1/1) ... [2024-06-14 13:26:47,545 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:47" (1/1) ... [2024-06-14 13:26:47,570 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 126 [2024-06-14 13:26:47,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 13:26:47,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 13:26:47,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 13:26:47,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 13:26:47,585 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:47" (1/1) ... [2024-06-14 13:26:47,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:47" (1/1) ... [2024-06-14 13:26:47,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:47" (1/1) ... [2024-06-14 13:26:47,600 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 13:26:47,600 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:47" (1/1) ... [2024-06-14 13:26:47,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:47" (1/1) ... [2024-06-14 13:26:47,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:47" (1/1) ... [2024-06-14 13:26:47,610 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:47" (1/1) ... [2024-06-14 13:26:47,612 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:47" (1/1) ... [2024-06-14 13:26:47,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:47" (1/1) ... [2024-06-14 13:26:47,616 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 13:26:47,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 13:26:47,617 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 13:26:47,617 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 13:26:47,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:47" (1/1) ... [2024-06-14 13:26:47,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:26:47,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 13:26:47,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 13:26:47,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 13:26:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 13:26:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 13:26:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 13:26:47,680 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 13:26:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 13:26:47,681 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 13:26:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-14 13:26:47,681 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-14 13:26:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 13:26:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 13:26:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 13:26:47,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 13:26:47,682 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 13:26:47,780 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 13:26:47,782 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 13:26:48,058 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 13:26:48,060 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 13:26:48,216 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 13:26:48,217 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 13:26:48,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:26:48 BoogieIcfgContainer [2024-06-14 13:26:48,218 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 13:26:48,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 13:26:48,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 13:26:48,222 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 13:26:48,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:26:45" (1/4) ... [2024-06-14 13:26:48,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a9b14c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:26:48, skipping insertion in model container [2024-06-14 13:26:48,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 01:26:46" (2/4) ... [2024-06-14 13:26:48,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a9b14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:26:48, skipping insertion in model container [2024-06-14 13:26:48,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:47" (3/4) ... [2024-06-14 13:26:48,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a9b14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:26:48, skipping insertion in model container [2024-06-14 13:26:48,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:26:48" (4/4) ... [2024-06-14 13:26:48,225 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:26:48,239 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 13:26:48,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-14 13:26:48,239 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 13:26:48,278 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 13:26:48,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-14 13:26:48,328 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-14 13:26:48,329 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:26:48,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 13:26:48,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-14 13:26:48,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-14 13:26:48,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 13:26:48,355 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5f2d860d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 13:26:48,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-14 13:26:48,362 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 13:26:48,363 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 13:26:48,363 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:26:48,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:48,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 13:26:48,364 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:26:48,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:48,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1623706950, now seen corresponding path program 1 times [2024-06-14 13:26:48,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:48,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929047348] [2024-06-14 13:26:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:48,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:49,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:49,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929047348] [2024-06-14 13:26:49,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929047348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:49,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:49,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 13:26:49,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529487999] [2024-06-14 13:26:49,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:49,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 13:26:49,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:49,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 13:26:49,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 13:26:49,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-14 13:26:49,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:49,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:49,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-14 13:26:49,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:49,630 INFO L124 PetriNetUnfolderBase]: 942/1466 cut-off events. [2024-06-14 13:26:49,631 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-06-14 13:26:49,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2984 conditions, 1466 events. 942/1466 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7280 event pairs, 546 based on Foata normal form. 2/1428 useless extension candidates. Maximal degree in co-relation 2969. Up to 1428 conditions per place. [2024-06-14 13:26:49,648 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 33 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-14 13:26:49,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 177 flow [2024-06-14 13:26:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 13:26:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 13:26:49,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-14 13:26:49,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2024-06-14 13:26:49,659 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 79 transitions. [2024-06-14 13:26:49,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 177 flow [2024-06-14 13:26:49,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 13:26:49,664 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-14 13:26:49,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-14 13:26:49,669 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-14 13:26:49,669 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-14 13:26:49,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:49,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:49,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:49,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 13:26:49,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:26:49,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:49,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1309217895, now seen corresponding path program 1 times [2024-06-14 13:26:49,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:49,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301424785] [2024-06-14 13:26:49,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:49,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:50,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:50,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301424785] [2024-06-14 13:26:50,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301424785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:50,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:50,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 13:26:50,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869437227] [2024-06-14 13:26:50,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:50,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 13:26:50,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:50,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 13:26:50,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 13:26:50,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-14 13:26:50,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:50,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:50,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-14 13:26:50,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:50,427 INFO L124 PetriNetUnfolderBase]: 1134/1736 cut-off events. [2024-06-14 13:26:50,427 INFO L125 PetriNetUnfolderBase]: For 279/279 co-relation queries the response was YES. [2024-06-14 13:26:50,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4015 conditions, 1736 events. 1134/1736 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8267 event pairs, 590 based on Foata normal form. 6/1740 useless extension candidates. Maximal degree in co-relation 4000. Up to 1676 conditions per place. [2024-06-14 13:26:50,434 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 44 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-14 13:26:50,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 262 flow [2024-06-14 13:26:50,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 13:26:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 13:26:50,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-06-14 13:26:50,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-06-14 13:26:50,436 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 99 transitions. [2024-06-14 13:26:50,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 262 flow [2024-06-14 13:26:50,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 13:26:50,438 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 154 flow [2024-06-14 13:26:50,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-06-14 13:26:50,439 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-14 13:26:50,439 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 154 flow [2024-06-14 13:26:50,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:50,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:50,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:50,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 13:26:50,440 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:26:50,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:50,440 INFO L85 PathProgramCache]: Analyzing trace with hash -895031745, now seen corresponding path program 1 times [2024-06-14 13:26:50,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:50,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44619526] [2024-06-14 13:26:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:50,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:51,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:51,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:51,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44619526] [2024-06-14 13:26:51,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44619526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:51,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:51,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:26:51,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027173562] [2024-06-14 13:26:51,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:51,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:26:51,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:51,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:26:51,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:26:51,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-14 13:26:51,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:51,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:51,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-14 13:26:51,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:51,512 INFO L124 PetriNetUnfolderBase]: 980/1529 cut-off events. [2024-06-14 13:26:51,512 INFO L125 PetriNetUnfolderBase]: For 738/740 co-relation queries the response was YES. [2024-06-14 13:26:51,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3913 conditions, 1529 events. 980/1529 cut-off events. For 738/740 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7468 event pairs, 562 based on Foata normal form. 3/1488 useless extension candidates. Maximal degree in co-relation 3895. Up to 1473 conditions per place. [2024-06-14 13:26:51,519 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 41 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-14 13:26:51,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 60 transitions, 310 flow [2024-06-14 13:26:51,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:26:51,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:26:51,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-14 13:26:51,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2024-06-14 13:26:51,521 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 154 flow. Second operand 5 states and 106 transitions. [2024-06-14 13:26:51,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 60 transitions, 310 flow [2024-06-14 13:26:51,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 308 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-14 13:26:51,524 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 223 flow [2024-06-14 13:26:51,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-06-14 13:26:51,525 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-14 13:26:51,525 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 223 flow [2024-06-14 13:26:51,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:51,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:51,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:51,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 13:26:51,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:26:51,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:51,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1057930921, now seen corresponding path program 1 times [2024-06-14 13:26:51,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:51,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189357760] [2024-06-14 13:26:51,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:51,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:52,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:52,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189357760] [2024-06-14 13:26:52,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189357760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:52,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:52,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:26:52,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797154088] [2024-06-14 13:26:52,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:52,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:26:52,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:52,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:26:52,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:26:52,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-06-14 13:26:52,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:52,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:52,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-06-14 13:26:52,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:52,760 INFO L124 PetriNetUnfolderBase]: 1122/1717 cut-off events. [2024-06-14 13:26:52,760 INFO L125 PetriNetUnfolderBase]: For 1602/1610 co-relation queries the response was YES. [2024-06-14 13:26:52,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5032 conditions, 1717 events. 1122/1717 cut-off events. For 1602/1610 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8159 event pairs, 380 based on Foata normal form. 12/1727 useless extension candidates. Maximal degree in co-relation 5009. Up to 1627 conditions per place. [2024-06-14 13:26:52,770 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 60 selfloop transitions, 12 changer transitions 0/78 dead transitions. [2024-06-14 13:26:52,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 449 flow [2024-06-14 13:26:52,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:26:52,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:26:52,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-14 13:26:52,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-14 13:26:52,772 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 223 flow. Second operand 6 states and 138 transitions. [2024-06-14 13:26:52,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 449 flow [2024-06-14 13:26:52,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 78 transitions, 436 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-14 13:26:52,775 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 267 flow [2024-06-14 13:26:52,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-14 13:26:52,776 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-14 13:26:52,776 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 267 flow [2024-06-14 13:26:52,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:52,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:52,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:52,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 13:26:52,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:26:52,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:52,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1976179622, now seen corresponding path program 1 times [2024-06-14 13:26:52,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:52,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778212689] [2024-06-14 13:26:52,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:52,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:53,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:53,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778212689] [2024-06-14 13:26:53,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778212689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:53,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:53,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:26:53,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251875933] [2024-06-14 13:26:53,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:53,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:26:53,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:53,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:26:53,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:26:53,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:26:53,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:53,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:53,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:26:53,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:53,776 INFO L124 PetriNetUnfolderBase]: 1182/1836 cut-off events. [2024-06-14 13:26:53,776 INFO L125 PetriNetUnfolderBase]: For 2974/2978 co-relation queries the response was YES. [2024-06-14 13:26:53,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5776 conditions, 1836 events. 1182/1836 cut-off events. For 2974/2978 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8986 event pairs, 517 based on Foata normal form. 2/1815 useless extension candidates. Maximal degree in co-relation 5751. Up to 1727 conditions per place. [2024-06-14 13:26:53,785 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 55 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2024-06-14 13:26:53,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 485 flow [2024-06-14 13:26:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:26:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:26:53,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-14 13:26:53,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-14 13:26:53,788 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 267 flow. Second operand 6 states and 118 transitions. [2024-06-14 13:26:53,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 485 flow [2024-06-14 13:26:53,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 456 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-14 13:26:53,795 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 338 flow [2024-06-14 13:26:53,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-06-14 13:26:53,798 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-06-14 13:26:53,798 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 338 flow [2024-06-14 13:26:53,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:53,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:53,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:53,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 13:26:53,802 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:26:53,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:53,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1138700578, now seen corresponding path program 1 times [2024-06-14 13:26:53,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:53,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248082896] [2024-06-14 13:26:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:53,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:54,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:54,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248082896] [2024-06-14 13:26:54,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248082896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:54,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:54,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:26:54,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452004615] [2024-06-14 13:26:54,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:54,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:26:54,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:54,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:26:54,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:26:54,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:26:54,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 338 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:54,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:54,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:26:54,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:54,795 INFO L124 PetriNetUnfolderBase]: 1263/1942 cut-off events. [2024-06-14 13:26:54,795 INFO L125 PetriNetUnfolderBase]: For 3886/3903 co-relation queries the response was YES. [2024-06-14 13:26:54,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6561 conditions, 1942 events. 1263/1942 cut-off events. For 3886/3903 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9416 event pairs, 500 based on Foata normal form. 16/1950 useless extension candidates. Maximal degree in co-relation 6532. Up to 1853 conditions per place. [2024-06-14 13:26:54,806 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 61 selfloop transitions, 13 changer transitions 0/83 dead transitions. [2024-06-14 13:26:54,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 83 transitions, 550 flow [2024-06-14 13:26:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:26:54,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:26:54,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-14 13:26:54,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-14 13:26:54,808 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 338 flow. Second operand 6 states and 122 transitions. [2024-06-14 13:26:54,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 83 transitions, 550 flow [2024-06-14 13:26:54,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 544 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-14 13:26:54,814 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 386 flow [2024-06-14 13:26:54,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=386, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-06-14 13:26:54,816 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2024-06-14 13:26:54,816 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 386 flow [2024-06-14 13:26:54,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:54,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:54,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:54,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 13:26:54,817 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:26:54,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:54,817 INFO L85 PathProgramCache]: Analyzing trace with hash -854978038, now seen corresponding path program 2 times [2024-06-14 13:26:54,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:54,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114082166] [2024-06-14 13:26:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:54,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:55,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114082166] [2024-06-14 13:26:55,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114082166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:55,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:55,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:26:55,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472031676] [2024-06-14 13:26:55,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:55,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:26:55,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:55,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:26:55,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:26:55,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:26:55,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 386 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:55,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:55,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:26:55,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:55,890 INFO L124 PetriNetUnfolderBase]: 1293/1988 cut-off events. [2024-06-14 13:26:55,890 INFO L125 PetriNetUnfolderBase]: For 5428/5446 co-relation queries the response was YES. [2024-06-14 13:26:55,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7324 conditions, 1988 events. 1293/1988 cut-off events. For 5428/5446 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9716 event pairs, 499 based on Foata normal form. 13/1990 useless extension candidates. Maximal degree in co-relation 7292. Up to 1865 conditions per place. [2024-06-14 13:26:55,904 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 59 selfloop transitions, 19 changer transitions 0/87 dead transitions. [2024-06-14 13:26:55,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 87 transitions, 628 flow [2024-06-14 13:26:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:26:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:26:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-14 13:26:55,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-14 13:26:55,906 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 386 flow. Second operand 6 states and 122 transitions. [2024-06-14 13:26:55,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 87 transitions, 628 flow [2024-06-14 13:26:55,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 87 transitions, 598 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 13:26:55,912 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 464 flow [2024-06-14 13:26:55,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-06-14 13:26:55,912 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2024-06-14 13:26:55,913 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 464 flow [2024-06-14 13:26:55,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:55,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:55,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:55,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 13:26:55,913 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:26:55,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:55,914 INFO L85 PathProgramCache]: Analyzing trace with hash -854969110, now seen corresponding path program 1 times [2024-06-14 13:26:55,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:55,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467498734] [2024-06-14 13:26:55,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:55,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:56,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:56,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467498734] [2024-06-14 13:26:56,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467498734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:56,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:56,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:26:56,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483173783] [2024-06-14 13:26:56,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:56,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:26:56,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:56,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:26:56,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:26:56,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:26:56,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 464 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:56,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:56,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:26:56,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:57,201 INFO L124 PetriNetUnfolderBase]: 1265/1960 cut-off events. [2024-06-14 13:26:57,202 INFO L125 PetriNetUnfolderBase]: For 7349/7369 co-relation queries the response was YES. [2024-06-14 13:26:57,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7623 conditions, 1960 events. 1265/1960 cut-off events. For 7349/7369 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9755 event pairs, 504 based on Foata normal form. 2/1932 useless extension candidates. Maximal degree in co-relation 7589. Up to 1824 conditions per place. [2024-06-14 13:26:57,223 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 65 selfloop transitions, 14 changer transitions 0/92 dead transitions. [2024-06-14 13:26:57,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 92 transitions, 684 flow [2024-06-14 13:26:57,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:26:57,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:26:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-14 13:26:57,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2024-06-14 13:26:57,227 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 464 flow. Second operand 7 states and 136 transitions. [2024-06-14 13:26:57,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 92 transitions, 684 flow [2024-06-14 13:26:57,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 92 transitions, 653 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-14 13:26:57,234 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 489 flow [2024-06-14 13:26:57,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2024-06-14 13:26:57,235 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-06-14 13:26:57,235 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 489 flow [2024-06-14 13:26:57,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:57,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:57,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:57,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 13:26:57,236 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:26:57,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:57,236 INFO L85 PathProgramCache]: Analyzing trace with hash -939978853, now seen corresponding path program 1 times [2024-06-14 13:26:57,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:57,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95540083] [2024-06-14 13:26:57,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:57,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:57,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:57,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95540083] [2024-06-14 13:26:57,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95540083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:57,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:57,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:26:57,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047783885] [2024-06-14 13:26:57,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:57,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:26:57,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:57,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:26:57,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:26:58,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:26:58,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 489 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:58,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:58,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:26:58,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:58,435 INFO L124 PetriNetUnfolderBase]: 1364/2081 cut-off events. [2024-06-14 13:26:58,436 INFO L125 PetriNetUnfolderBase]: For 8374/8374 co-relation queries the response was YES. [2024-06-14 13:26:58,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8515 conditions, 2081 events. 1364/2081 cut-off events. For 8374/8374 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10006 event pairs, 518 based on Foata normal form. 4/2083 useless extension candidates. Maximal degree in co-relation 8479. Up to 1981 conditions per place. [2024-06-14 13:26:58,449 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 87 selfloop transitions, 14 changer transitions 0/106 dead transitions. [2024-06-14 13:26:58,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 106 transitions, 815 flow [2024-06-14 13:26:58,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:26:58,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:26:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-14 13:26:58,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-06-14 13:26:58,451 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 489 flow. Second operand 7 states and 135 transitions. [2024-06-14 13:26:58,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 106 transitions, 815 flow [2024-06-14 13:26:58,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 106 transitions, 783 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 13:26:58,456 INFO L231 Difference]: Finished difference. Result has 79 places, 82 transitions, 575 flow [2024-06-14 13:26:58,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=575, PETRI_PLACES=79, PETRI_TRANSITIONS=82} [2024-06-14 13:26:58,457 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-06-14 13:26:58,457 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 82 transitions, 575 flow [2024-06-14 13:26:58,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:58,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:58,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:58,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 13:26:58,458 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:26:58,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:58,458 INFO L85 PathProgramCache]: Analyzing trace with hash -734514705, now seen corresponding path program 2 times [2024-06-14 13:26:58,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:58,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011464699] [2024-06-14 13:26:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:58,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:59,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:59,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011464699] [2024-06-14 13:26:59,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011464699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:59,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:59,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:26:59,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152821228] [2024-06-14 13:26:59,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:59,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:26:59,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:59,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:26:59,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:26:59,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:26:59,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 82 transitions, 575 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:59,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:59,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:26:59,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:59,593 INFO L124 PetriNetUnfolderBase]: 1402/2146 cut-off events. [2024-06-14 13:26:59,593 INFO L125 PetriNetUnfolderBase]: For 10942/10942 co-relation queries the response was YES. [2024-06-14 13:26:59,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9318 conditions, 2146 events. 1402/2146 cut-off events. For 10942/10942 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10406 event pairs, 530 based on Foata normal form. 4/2146 useless extension candidates. Maximal degree in co-relation 9279. Up to 1953 conditions per place. [2024-06-14 13:26:59,606 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 84 selfloop transitions, 25 changer transitions 0/114 dead transitions. [2024-06-14 13:26:59,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 114 transitions, 951 flow [2024-06-14 13:26:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:26:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:26:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-14 13:26:59,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-06-14 13:26:59,607 INFO L175 Difference]: Start difference. First operand has 79 places, 82 transitions, 575 flow. Second operand 7 states and 139 transitions. [2024-06-14 13:26:59,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 114 transitions, 951 flow [2024-06-14 13:26:59,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 114 transitions, 925 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-14 13:26:59,614 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 682 flow [2024-06-14 13:26:59,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=682, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2024-06-14 13:26:59,615 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-06-14 13:26:59,616 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 682 flow [2024-06-14 13:26:59,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:59,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:59,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:59,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 13:26:59,616 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:26:59,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:59,617 INFO L85 PathProgramCache]: Analyzing trace with hash -734247795, now seen corresponding path program 3 times [2024-06-14 13:26:59,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:59,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951605052] [2024-06-14 13:26:59,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:59,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:00,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:00,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951605052] [2024-06-14 13:27:00,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951605052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:00,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:00,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:27:00,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547754070] [2024-06-14 13:27:00,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:00,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:27:00,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:00,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:27:00,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:27:00,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:00,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 682 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:00,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:00,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:00,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:00,815 INFO L124 PetriNetUnfolderBase]: 1392/2127 cut-off events. [2024-06-14 13:27:00,816 INFO L125 PetriNetUnfolderBase]: For 13319/13319 co-relation queries the response was YES. [2024-06-14 13:27:00,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9836 conditions, 2127 events. 1392/2127 cut-off events. For 13319/13319 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10284 event pairs, 523 based on Foata normal form. 4/2127 useless extension candidates. Maximal degree in co-relation 9794. Up to 1945 conditions per place. [2024-06-14 13:27:00,832 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 81 selfloop transitions, 27 changer transitions 0/113 dead transitions. [2024-06-14 13:27:00,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 969 flow [2024-06-14 13:27:00,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:27:00,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:27:00,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-14 13:27:00,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2024-06-14 13:27:00,834 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 682 flow. Second operand 7 states and 136 transitions. [2024-06-14 13:27:00,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 113 transitions, 969 flow [2024-06-14 13:27:00,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 113 transitions, 887 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-14 13:27:00,847 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 673 flow [2024-06-14 13:27:00,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=673, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2024-06-14 13:27:00,848 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2024-06-14 13:27:00,848 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 673 flow [2024-06-14 13:27:00,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:00,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:00,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:00,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 13:27:00,849 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:00,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:00,849 INFO L85 PathProgramCache]: Analyzing trace with hash -734237875, now seen corresponding path program 1 times [2024-06-14 13:27:00,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:00,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600629855] [2024-06-14 13:27:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:00,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:01,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:01,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:01,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600629855] [2024-06-14 13:27:01,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600629855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:01,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:01,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:27:01,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425680524] [2024-06-14 13:27:01,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:01,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:27:01,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:01,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:27:01,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:27:01,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:27:01,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 673 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:01,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:01,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:27:01,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:02,295 INFO L124 PetriNetUnfolderBase]: 1298/2035 cut-off events. [2024-06-14 13:27:02,295 INFO L125 PetriNetUnfolderBase]: For 14878/14878 co-relation queries the response was YES. [2024-06-14 13:27:02,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9416 conditions, 2035 events. 1298/2035 cut-off events. For 14878/14878 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 10105 event pairs, 476 based on Foata normal form. 4/2023 useless extension candidates. Maximal degree in co-relation 9374. Up to 1850 conditions per place. [2024-06-14 13:27:02,309 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 88 selfloop transitions, 16 changer transitions 0/117 dead transitions. [2024-06-14 13:27:02,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 117 transitions, 957 flow [2024-06-14 13:27:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:27:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:27:02,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-14 13:27:02,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-14 13:27:02,311 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 673 flow. Second operand 8 states and 154 transitions. [2024-06-14 13:27:02,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 117 transitions, 957 flow [2024-06-14 13:27:02,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 117 transitions, 915 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 13:27:02,320 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 690 flow [2024-06-14 13:27:02,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=690, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2024-06-14 13:27:02,320 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-06-14 13:27:02,321 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 690 flow [2024-06-14 13:27:02,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:02,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:02,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:02,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 13:27:02,321 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:02,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:02,322 INFO L85 PathProgramCache]: Analyzing trace with hash 925242783, now seen corresponding path program 1 times [2024-06-14 13:27:02,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:02,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206886372] [2024-06-14 13:27:02,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:02,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:03,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:03,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206886372] [2024-06-14 13:27:03,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206886372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:03,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:03,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:27:03,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011059658] [2024-06-14 13:27:03,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:03,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:27:03,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:03,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:27:03,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:27:03,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:27:03,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 690 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:03,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:03,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:27:03,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:03,752 INFO L124 PetriNetUnfolderBase]: 1332/2061 cut-off events. [2024-06-14 13:27:03,752 INFO L125 PetriNetUnfolderBase]: For 17825/17865 co-relation queries the response was YES. [2024-06-14 13:27:03,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9890 conditions, 2061 events. 1332/2061 cut-off events. For 17825/17865 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10167 event pairs, 464 based on Foata normal form. 21/2033 useless extension candidates. Maximal degree in co-relation 9847. Up to 1897 conditions per place. [2024-06-14 13:27:03,766 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 86 selfloop transitions, 18 changer transitions 0/121 dead transitions. [2024-06-14 13:27:03,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 121 transitions, 992 flow [2024-06-14 13:27:03,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:27:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:27:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-14 13:27:03,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-14 13:27:03,769 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 690 flow. Second operand 7 states and 142 transitions. [2024-06-14 13:27:03,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 121 transitions, 992 flow [2024-06-14 13:27:03,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 121 transitions, 951 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 13:27:03,781 INFO L231 Difference]: Finished difference. Result has 92 places, 96 transitions, 729 flow [2024-06-14 13:27:03,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=729, PETRI_PLACES=92, PETRI_TRANSITIONS=96} [2024-06-14 13:27:03,782 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2024-06-14 13:27:03,782 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 96 transitions, 729 flow [2024-06-14 13:27:03,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:03,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:03,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:03,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 13:27:03,783 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:03,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:03,783 INFO L85 PathProgramCache]: Analyzing trace with hash 925427357, now seen corresponding path program 1 times [2024-06-14 13:27:03,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:03,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713403588] [2024-06-14 13:27:03,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:03,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:04,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:04,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713403588] [2024-06-14 13:27:04,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713403588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:04,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:04,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:27:04,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719397464] [2024-06-14 13:27:04,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:04,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:27:04,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:04,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:27:04,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:27:04,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:04,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 96 transitions, 729 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:04,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:04,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:04,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:05,160 INFO L124 PetriNetUnfolderBase]: 1387/2130 cut-off events. [2024-06-14 13:27:05,160 INFO L125 PetriNetUnfolderBase]: For 18839/18839 co-relation queries the response was YES. [2024-06-14 13:27:05,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10402 conditions, 2130 events. 1387/2130 cut-off events. For 18839/18839 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10335 event pairs, 484 based on Foata normal form. 2/2130 useless extension candidates. Maximal degree in co-relation 10358. Up to 2029 conditions per place. [2024-06-14 13:27:05,177 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 109 selfloop transitions, 17 changer transitions 0/131 dead transitions. [2024-06-14 13:27:05,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 131 transitions, 1099 flow [2024-06-14 13:27:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:27:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:27:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-14 13:27:05,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-14 13:27:05,178 INFO L175 Difference]: Start difference. First operand has 92 places, 96 transitions, 729 flow. Second operand 8 states and 150 transitions. [2024-06-14 13:27:05,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 131 transitions, 1099 flow [2024-06-14 13:27:05,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 131 transitions, 1045 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-14 13:27:05,190 INFO L231 Difference]: Finished difference. Result has 97 places, 105 transitions, 791 flow [2024-06-14 13:27:05,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=791, PETRI_PLACES=97, PETRI_TRANSITIONS=105} [2024-06-14 13:27:05,192 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-06-14 13:27:05,192 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 105 transitions, 791 flow [2024-06-14 13:27:05,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:05,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:05,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:05,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 13:27:05,193 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:05,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:05,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1258250595, now seen corresponding path program 2 times [2024-06-14 13:27:05,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:05,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508206690] [2024-06-14 13:27:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:05,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:06,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:06,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508206690] [2024-06-14 13:27:06,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508206690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:06,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:06,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:27:06,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428288132] [2024-06-14 13:27:06,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:06,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:27:06,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:06,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:27:06,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:27:06,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:06,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 105 transitions, 791 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:06,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:06,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:06,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:06,470 INFO L124 PetriNetUnfolderBase]: 1398/2151 cut-off events. [2024-06-14 13:27:06,470 INFO L125 PetriNetUnfolderBase]: For 21430/21430 co-relation queries the response was YES. [2024-06-14 13:27:06,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10924 conditions, 2151 events. 1398/2151 cut-off events. For 21430/21430 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10506 event pairs, 484 based on Foata normal form. 2/2149 useless extension candidates. Maximal degree in co-relation 10877. Up to 2000 conditions per place. [2024-06-14 13:27:06,485 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 106 selfloop transitions, 28 changer transitions 0/139 dead transitions. [2024-06-14 13:27:06,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 139 transitions, 1191 flow [2024-06-14 13:27:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:27:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:27:06,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-14 13:27:06,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-14 13:27:06,487 INFO L175 Difference]: Start difference. First operand has 97 places, 105 transitions, 791 flow. Second operand 8 states and 151 transitions. [2024-06-14 13:27:06,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 139 transitions, 1191 flow [2024-06-14 13:27:06,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 139 transitions, 1167 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-14 13:27:06,500 INFO L231 Difference]: Finished difference. Result has 104 places, 116 transitions, 934 flow [2024-06-14 13:27:06,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=934, PETRI_PLACES=104, PETRI_TRANSITIONS=116} [2024-06-14 13:27:06,501 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2024-06-14 13:27:06,501 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 116 transitions, 934 flow [2024-06-14 13:27:06,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:06,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:06,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:06,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 13:27:06,501 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:06,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:06,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1286547767, now seen corresponding path program 3 times [2024-06-14 13:27:06,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:06,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548370208] [2024-06-14 13:27:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:06,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:06,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:07,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:07,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548370208] [2024-06-14 13:27:07,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548370208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:07,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:07,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:27:07,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193925660] [2024-06-14 13:27:07,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:07,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:27:07,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:07,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:27:07,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:27:07,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:07,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 934 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:07,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:07,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:07,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:07,957 INFO L124 PetriNetUnfolderBase]: 1420/2178 cut-off events. [2024-06-14 13:27:07,957 INFO L125 PetriNetUnfolderBase]: For 24932/24932 co-relation queries the response was YES. [2024-06-14 13:27:07,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11694 conditions, 2178 events. 1420/2178 cut-off events. For 24932/24932 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10553 event pairs, 484 based on Foata normal form. 4/2178 useless extension candidates. Maximal degree in co-relation 11643. Up to 1920 conditions per place. [2024-06-14 13:27:07,971 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 95 selfloop transitions, 53 changer transitions 0/153 dead transitions. [2024-06-14 13:27:07,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 153 transitions, 1447 flow [2024-06-14 13:27:07,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-14 13:27:07,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-14 13:27:07,972 INFO L175 Difference]: Start difference. First operand has 104 places, 116 transitions, 934 flow. Second operand 9 states and 175 transitions. [2024-06-14 13:27:07,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 153 transitions, 1447 flow [2024-06-14 13:27:07,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 153 transitions, 1399 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-14 13:27:07,987 INFO L231 Difference]: Finished difference. Result has 110 places, 123 transitions, 1091 flow [2024-06-14 13:27:07,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1091, PETRI_PLACES=110, PETRI_TRANSITIONS=123} [2024-06-14 13:27:07,988 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-06-14 13:27:07,988 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 123 transitions, 1091 flow [2024-06-14 13:27:07,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:07,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:07,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:07,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 13:27:07,988 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:07,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:07,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1894011676, now seen corresponding path program 1 times [2024-06-14 13:27:07,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:07,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133449955] [2024-06-14 13:27:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:07,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:08,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:08,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133449955] [2024-06-14 13:27:08,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133449955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:08,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:08,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:27:08,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985882246] [2024-06-14 13:27:08,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:08,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:27:08,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:08,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:27:08,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:27:08,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:08,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 123 transitions, 1091 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:08,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:08,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:08,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:09,468 INFO L124 PetriNetUnfolderBase]: 1478/2274 cut-off events. [2024-06-14 13:27:09,468 INFO L125 PetriNetUnfolderBase]: For 28764/28764 co-relation queries the response was YES. [2024-06-14 13:27:09,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12889 conditions, 2274 events. 1478/2274 cut-off events. For 28764/28764 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11053 event pairs, 473 based on Foata normal form. 2/2274 useless extension candidates. Maximal degree in co-relation 12836. Up to 2136 conditions per place. [2024-06-14 13:27:09,485 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 141 selfloop transitions, 27 changer transitions 0/173 dead transitions. [2024-06-14 13:27:09,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 173 transitions, 1698 flow [2024-06-14 13:27:09,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-14 13:27:09,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:27:09,487 INFO L175 Difference]: Start difference. First operand has 110 places, 123 transitions, 1091 flow. Second operand 9 states and 171 transitions. [2024-06-14 13:27:09,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 173 transitions, 1698 flow [2024-06-14 13:27:09,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 173 transitions, 1610 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-14 13:27:09,512 INFO L231 Difference]: Finished difference. Result has 117 places, 143 transitions, 1296 flow [2024-06-14 13:27:09,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1296, PETRI_PLACES=117, PETRI_TRANSITIONS=143} [2024-06-14 13:27:09,512 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2024-06-14 13:27:09,512 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 143 transitions, 1296 flow [2024-06-14 13:27:09,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:09,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:09,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:09,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 13:27:09,513 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:09,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:09,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1252703160, now seen corresponding path program 2 times [2024-06-14 13:27:09,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:09,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156912643] [2024-06-14 13:27:09,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:09,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:10,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:10,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156912643] [2024-06-14 13:27:10,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156912643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:10,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:10,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:27:10,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032312815] [2024-06-14 13:27:10,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:10,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:27:10,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:10,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:27:10,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:27:10,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:10,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 143 transitions, 1296 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:10,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:10,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:10,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:11,005 INFO L124 PetriNetUnfolderBase]: 1473/2277 cut-off events. [2024-06-14 13:27:11,005 INFO L125 PetriNetUnfolderBase]: For 32096/32096 co-relation queries the response was YES. [2024-06-14 13:27:11,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13364 conditions, 2277 events. 1473/2277 cut-off events. For 32096/32096 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11120 event pairs, 453 based on Foata normal form. 2/2277 useless extension candidates. Maximal degree in co-relation 13306. Up to 2106 conditions per place. [2024-06-14 13:27:11,023 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 141 selfloop transitions, 32 changer transitions 0/178 dead transitions. [2024-06-14 13:27:11,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 178 transitions, 1810 flow [2024-06-14 13:27:11,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:27:11,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:27:11,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-14 13:27:11,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-14 13:27:11,033 INFO L175 Difference]: Start difference. First operand has 117 places, 143 transitions, 1296 flow. Second operand 8 states and 153 transitions. [2024-06-14 13:27:11,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 178 transitions, 1810 flow [2024-06-14 13:27:11,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 178 transitions, 1730 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-14 13:27:11,062 INFO L231 Difference]: Finished difference. Result has 124 places, 149 transitions, 1385 flow [2024-06-14 13:27:11,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1385, PETRI_PLACES=124, PETRI_TRANSITIONS=149} [2024-06-14 13:27:11,063 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2024-06-14 13:27:11,063 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 149 transitions, 1385 flow [2024-06-14 13:27:11,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:11,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:11,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:11,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 13:27:11,064 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:11,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:11,064 INFO L85 PathProgramCache]: Analyzing trace with hash 31027308, now seen corresponding path program 1 times [2024-06-14 13:27:11,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:11,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860011851] [2024-06-14 13:27:11,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:11,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:11,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:11,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860011851] [2024-06-14 13:27:11,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860011851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:11,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:11,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:11,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638496858] [2024-06-14 13:27:11,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:11,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:11,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:11,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:11,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:12,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:12,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 149 transitions, 1385 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:12,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:12,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:12,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:12,618 INFO L124 PetriNetUnfolderBase]: 1490/2304 cut-off events. [2024-06-14 13:27:12,618 INFO L125 PetriNetUnfolderBase]: For 36657/36657 co-relation queries the response was YES. [2024-06-14 13:27:12,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13990 conditions, 2304 events. 1490/2304 cut-off events. For 36657/36657 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11283 event pairs, 449 based on Foata normal form. 4/2306 useless extension candidates. Maximal degree in co-relation 13929. Up to 2155 conditions per place. [2024-06-14 13:27:12,635 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 156 selfloop transitions, 22 changer transitions 0/183 dead transitions. [2024-06-14 13:27:12,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 183 transitions, 1871 flow [2024-06-14 13:27:12,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:12,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-14 13:27:12,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-14 13:27:12,641 INFO L175 Difference]: Start difference. First operand has 124 places, 149 transitions, 1385 flow. Second operand 9 states and 167 transitions. [2024-06-14 13:27:12,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 183 transitions, 1871 flow [2024-06-14 13:27:12,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 183 transitions, 1792 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-14 13:27:12,671 INFO L231 Difference]: Finished difference. Result has 130 places, 151 transitions, 1389 flow [2024-06-14 13:27:12,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1389, PETRI_PLACES=130, PETRI_TRANSITIONS=151} [2024-06-14 13:27:12,671 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 87 predicate places. [2024-06-14 13:27:12,671 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 151 transitions, 1389 flow [2024-06-14 13:27:12,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:12,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:12,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:12,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 13:27:12,674 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:12,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:12,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1493971634, now seen corresponding path program 2 times [2024-06-14 13:27:12,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:12,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709154623] [2024-06-14 13:27:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:12,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:13,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:13,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709154623] [2024-06-14 13:27:13,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709154623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:13,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:13,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:13,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60725243] [2024-06-14 13:27:13,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:13,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:13,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:13,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:13,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:13,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:13,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 151 transitions, 1389 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:13,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:13,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:13,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:14,277 INFO L124 PetriNetUnfolderBase]: 1507/2333 cut-off events. [2024-06-14 13:27:14,277 INFO L125 PetriNetUnfolderBase]: For 36540/36540 co-relation queries the response was YES. [2024-06-14 13:27:14,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14105 conditions, 2333 events. 1507/2333 cut-off events. For 36540/36540 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11491 event pairs, 461 based on Foata normal form. 4/2331 useless extension candidates. Maximal degree in co-relation 14042. Up to 2137 conditions per place. [2024-06-14 13:27:14,292 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 145 selfloop transitions, 33 changer transitions 0/183 dead transitions. [2024-06-14 13:27:14,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 183 transitions, 1873 flow [2024-06-14 13:27:14,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:14,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:14,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-14 13:27:14,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 13:27:14,294 INFO L175 Difference]: Start difference. First operand has 130 places, 151 transitions, 1389 flow. Second operand 9 states and 168 transitions. [2024-06-14 13:27:14,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 183 transitions, 1873 flow [2024-06-14 13:27:14,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 183 transitions, 1806 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 13:27:14,317 INFO L231 Difference]: Finished difference. Result has 132 places, 153 transitions, 1431 flow [2024-06-14 13:27:14,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1431, PETRI_PLACES=132, PETRI_TRANSITIONS=153} [2024-06-14 13:27:14,318 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 89 predicate places. [2024-06-14 13:27:14,318 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 153 transitions, 1431 flow [2024-06-14 13:27:14,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:14,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:14,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:14,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 13:27:14,319 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:14,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1834801306, now seen corresponding path program 3 times [2024-06-14 13:27:14,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:14,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634394934] [2024-06-14 13:27:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:14,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:15,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:15,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634394934] [2024-06-14 13:27:15,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634394934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:15,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:15,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:15,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722110855] [2024-06-14 13:27:15,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:15,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:15,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:15,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:15,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:15,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:15,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 153 transitions, 1431 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:15,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:15,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:15,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:16,055 INFO L124 PetriNetUnfolderBase]: 1635/2540 cut-off events. [2024-06-14 13:27:16,055 INFO L125 PetriNetUnfolderBase]: For 45262/45262 co-relation queries the response was YES. [2024-06-14 13:27:16,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15870 conditions, 2540 events. 1635/2540 cut-off events. For 45262/45262 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12831 event pairs, 437 based on Foata normal form. 4/2539 useless extension candidates. Maximal degree in co-relation 15806. Up to 1960 conditions per place. [2024-06-14 13:27:16,074 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 127 selfloop transitions, 67 changer transitions 0/199 dead transitions. [2024-06-14 13:27:16,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 199 transitions, 2230 flow [2024-06-14 13:27:16,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:27:16,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:27:16,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-14 13:27:16,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-14 13:27:16,076 INFO L175 Difference]: Start difference. First operand has 132 places, 153 transitions, 1431 flow. Second operand 10 states and 192 transitions. [2024-06-14 13:27:16,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 199 transitions, 2230 flow [2024-06-14 13:27:16,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 199 transitions, 2135 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 13:27:16,110 INFO L231 Difference]: Finished difference. Result has 136 places, 160 transitions, 1590 flow [2024-06-14 13:27:16,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1590, PETRI_PLACES=136, PETRI_TRANSITIONS=160} [2024-06-14 13:27:16,111 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-06-14 13:27:16,111 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 160 transitions, 1590 flow [2024-06-14 13:27:16,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:16,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:16,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:16,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 13:27:16,111 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:16,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:16,111 INFO L85 PathProgramCache]: Analyzing trace with hash -94561512, now seen corresponding path program 4 times [2024-06-14 13:27:16,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:16,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311857746] [2024-06-14 13:27:16,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:16,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:17,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:17,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311857746] [2024-06-14 13:27:17,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311857746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:17,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:17,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:17,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131543497] [2024-06-14 13:27:17,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:17,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:17,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:17,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:17,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:17,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:17,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 160 transitions, 1590 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:17,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:17,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:17,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:17,659 INFO L124 PetriNetUnfolderBase]: 1663/2589 cut-off events. [2024-06-14 13:27:17,659 INFO L125 PetriNetUnfolderBase]: For 50434/50434 co-relation queries the response was YES. [2024-06-14 13:27:17,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16574 conditions, 2589 events. 1663/2589 cut-off events. For 50434/50434 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13020 event pairs, 470 based on Foata normal form. 4/2587 useless extension candidates. Maximal degree in co-relation 16508. Up to 2388 conditions per place. [2024-06-14 13:27:17,680 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 153 selfloop transitions, 36 changer transitions 0/194 dead transitions. [2024-06-14 13:27:17,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 194 transitions, 2120 flow [2024-06-14 13:27:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-14 13:27:17,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-14 13:27:17,681 INFO L175 Difference]: Start difference. First operand has 136 places, 160 transitions, 1590 flow. Second operand 9 states and 167 transitions. [2024-06-14 13:27:17,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 194 transitions, 2120 flow [2024-06-14 13:27:17,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 194 transitions, 1958 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-14 13:27:17,724 INFO L231 Difference]: Finished difference. Result has 140 places, 166 transitions, 1587 flow [2024-06-14 13:27:17,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1587, PETRI_PLACES=140, PETRI_TRANSITIONS=166} [2024-06-14 13:27:17,725 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 97 predicate places. [2024-06-14 13:27:17,725 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 166 transitions, 1587 flow [2024-06-14 13:27:17,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:17,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:17,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:17,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 13:27:17,725 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:17,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1228274354, now seen corresponding path program 5 times [2024-06-14 13:27:17,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:17,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145280924] [2024-06-14 13:27:17,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:17,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:18,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:18,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145280924] [2024-06-14 13:27:18,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145280924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:18,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:18,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:18,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326673967] [2024-06-14 13:27:18,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:18,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:18,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:18,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:18,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:18,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:18,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 166 transitions, 1587 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:18,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:18,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:18,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:19,483 INFO L124 PetriNetUnfolderBase]: 1655/2572 cut-off events. [2024-06-14 13:27:19,484 INFO L125 PetriNetUnfolderBase]: For 51203/51203 co-relation queries the response was YES. [2024-06-14 13:27:19,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16207 conditions, 2572 events. 1655/2572 cut-off events. For 51203/51203 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12911 event pairs, 475 based on Foata normal form. 4/2570 useless extension candidates. Maximal degree in co-relation 16139. Up to 2322 conditions per place. [2024-06-14 13:27:19,509 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 146 selfloop transitions, 50 changer transitions 0/201 dead transitions. [2024-06-14 13:27:19,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 201 transitions, 2115 flow [2024-06-14 13:27:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:27:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:27:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-14 13:27:19,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-14 13:27:19,511 INFO L175 Difference]: Start difference. First operand has 140 places, 166 transitions, 1587 flow. Second operand 10 states and 185 transitions. [2024-06-14 13:27:19,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 201 transitions, 2115 flow [2024-06-14 13:27:19,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 201 transitions, 2043 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 13:27:19,551 INFO L231 Difference]: Finished difference. Result has 147 places, 169 transitions, 1677 flow [2024-06-14 13:27:19,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1677, PETRI_PLACES=147, PETRI_TRANSITIONS=169} [2024-06-14 13:27:19,552 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 104 predicate places. [2024-06-14 13:27:19,552 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 169 transitions, 1677 flow [2024-06-14 13:27:19,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:19,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:19,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:19,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 13:27:19,552 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:19,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2073756864, now seen corresponding path program 1 times [2024-06-14 13:27:19,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:19,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832285898] [2024-06-14 13:27:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:19,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:20,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:20,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832285898] [2024-06-14 13:27:20,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832285898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:20,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:20,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:27:20,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674129358] [2024-06-14 13:27:20,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:20,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:27:20,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:20,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:27:20,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:27:20,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:27:20,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 169 transitions, 1677 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:20,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:20,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:27:20,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:20,967 INFO L124 PetriNetUnfolderBase]: 1599/2522 cut-off events. [2024-06-14 13:27:20,967 INFO L125 PetriNetUnfolderBase]: For 55833/55861 co-relation queries the response was YES. [2024-06-14 13:27:20,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16155 conditions, 2522 events. 1599/2522 cut-off events. For 55833/55861 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13023 event pairs, 375 based on Foata normal form. 10/2502 useless extension candidates. Maximal degree in co-relation 16085. Up to 2187 conditions per place. [2024-06-14 13:27:20,988 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 130 selfloop transitions, 28 changer transitions 0/200 dead transitions. [2024-06-14 13:27:20,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 200 transitions, 2103 flow [2024-06-14 13:27:20,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:27:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:27:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-14 13:27:20,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-14 13:27:20,989 INFO L175 Difference]: Start difference. First operand has 147 places, 169 transitions, 1677 flow. Second operand 8 states and 160 transitions. [2024-06-14 13:27:20,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 200 transitions, 2103 flow [2024-06-14 13:27:21,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 200 transitions, 1985 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 13:27:21,036 INFO L231 Difference]: Finished difference. Result has 148 places, 171 transitions, 1648 flow [2024-06-14 13:27:21,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1648, PETRI_PLACES=148, PETRI_TRANSITIONS=171} [2024-06-14 13:27:21,036 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 105 predicate places. [2024-06-14 13:27:21,036 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 171 transitions, 1648 flow [2024-06-14 13:27:21,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:21,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:21,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:21,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 13:27:21,037 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:21,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash 270803996, now seen corresponding path program 2 times [2024-06-14 13:27:21,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:21,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626143363] [2024-06-14 13:27:21,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:21,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:21,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:21,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626143363] [2024-06-14 13:27:21,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626143363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:21,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:21,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:27:21,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164440986] [2024-06-14 13:27:21,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:21,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:27:21,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:21,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:27:21,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:27:21,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:27:21,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 171 transitions, 1648 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:21,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:21,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:27:21,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:22,589 INFO L124 PetriNetUnfolderBase]: 1625/2562 cut-off events. [2024-06-14 13:27:22,589 INFO L125 PetriNetUnfolderBase]: For 57893/57908 co-relation queries the response was YES. [2024-06-14 13:27:22,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16429 conditions, 2562 events. 1625/2562 cut-off events. For 57893/57908 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 13263 event pairs, 450 based on Foata normal form. 8/2528 useless extension candidates. Maximal degree in co-relation 16358. Up to 2282 conditions per place. [2024-06-14 13:27:22,611 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 133 selfloop transitions, 27 changer transitions 0/202 dead transitions. [2024-06-14 13:27:22,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 202 transitions, 2102 flow [2024-06-14 13:27:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:27:22,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:27:22,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-14 13:27:22,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-14 13:27:22,612 INFO L175 Difference]: Start difference. First operand has 148 places, 171 transitions, 1648 flow. Second operand 8 states and 157 transitions. [2024-06-14 13:27:22,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 202 transitions, 2102 flow [2024-06-14 13:27:22,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 202 transitions, 2031 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 13:27:22,656 INFO L231 Difference]: Finished difference. Result has 151 places, 176 transitions, 1707 flow [2024-06-14 13:27:22,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1707, PETRI_PLACES=151, PETRI_TRANSITIONS=176} [2024-06-14 13:27:22,657 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 108 predicate places. [2024-06-14 13:27:22,657 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 176 transitions, 1707 flow [2024-06-14 13:27:22,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:22,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:22,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:22,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 13:27:22,658 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:22,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:22,658 INFO L85 PathProgramCache]: Analyzing trace with hash -12922818, now seen corresponding path program 3 times [2024-06-14 13:27:22,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:22,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321839466] [2024-06-14 13:27:22,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:22,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:23,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:23,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:23,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321839466] [2024-06-14 13:27:23,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321839466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:23,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:23,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:27:23,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346386286] [2024-06-14 13:27:23,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:23,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:27:23,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:23,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:27:23,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:27:23,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:27:23,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 176 transitions, 1707 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:23,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:23,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:27:23,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:24,184 INFO L124 PetriNetUnfolderBase]: 1640/2594 cut-off events. [2024-06-14 13:27:24,184 INFO L125 PetriNetUnfolderBase]: For 63295/63310 co-relation queries the response was YES. [2024-06-14 13:27:24,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16971 conditions, 2594 events. 1640/2594 cut-off events. For 63295/63310 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13491 event pairs, 444 based on Foata normal form. 8/2558 useless extension candidates. Maximal degree in co-relation 16898. Up to 2273 conditions per place. [2024-06-14 13:27:24,205 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 131 selfloop transitions, 33 changer transitions 0/206 dead transitions. [2024-06-14 13:27:24,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 206 transitions, 2151 flow [2024-06-14 13:27:24,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:27:24,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:27:24,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-14 13:27:24,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-14 13:27:24,206 INFO L175 Difference]: Start difference. First operand has 151 places, 176 transitions, 1707 flow. Second operand 8 states and 160 transitions. [2024-06-14 13:27:24,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 206 transitions, 2151 flow [2024-06-14 13:27:24,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 206 transitions, 2075 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-14 13:27:24,258 INFO L231 Difference]: Finished difference. Result has 154 places, 178 transitions, 1740 flow [2024-06-14 13:27:24,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1740, PETRI_PLACES=154, PETRI_TRANSITIONS=178} [2024-06-14 13:27:24,258 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 111 predicate places. [2024-06-14 13:27:24,258 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 178 transitions, 1740 flow [2024-06-14 13:27:24,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:24,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:24,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:24,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 13:27:24,259 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:24,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:24,259 INFO L85 PathProgramCache]: Analyzing trace with hash 277238046, now seen corresponding path program 1 times [2024-06-14 13:27:24,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:24,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331417700] [2024-06-14 13:27:24,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:24,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:25,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:25,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331417700] [2024-06-14 13:27:25,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331417700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:25,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:25,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:25,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898926076] [2024-06-14 13:27:25,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:25,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:25,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:25,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:25,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:25,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:25,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 178 transitions, 1740 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:25,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:25,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:25,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:26,008 INFO L124 PetriNetUnfolderBase]: 1752/2731 cut-off events. [2024-06-14 13:27:26,008 INFO L125 PetriNetUnfolderBase]: For 64734/64734 co-relation queries the response was YES. [2024-06-14 13:27:26,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18049 conditions, 2731 events. 1752/2731 cut-off events. For 64734/64734 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13928 event pairs, 467 based on Foata normal form. 2/2731 useless extension candidates. Maximal degree in co-relation 17975. Up to 2561 conditions per place. [2024-06-14 13:27:26,035 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 179 selfloop transitions, 29 changer transitions 0/213 dead transitions. [2024-06-14 13:27:26,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 213 transitions, 2309 flow [2024-06-14 13:27:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:26,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 13:27:26,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-14 13:27:26,036 INFO L175 Difference]: Start difference. First operand has 154 places, 178 transitions, 1740 flow. Second operand 9 states and 169 transitions. [2024-06-14 13:27:26,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 213 transitions, 2309 flow [2024-06-14 13:27:26,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 213 transitions, 2222 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 13:27:26,094 INFO L231 Difference]: Finished difference. Result has 157 places, 184 transitions, 1788 flow [2024-06-14 13:27:26,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1788, PETRI_PLACES=157, PETRI_TRANSITIONS=184} [2024-06-14 13:27:26,095 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 114 predicate places. [2024-06-14 13:27:26,095 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 184 transitions, 1788 flow [2024-06-14 13:27:26,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:26,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:26,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:26,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 13:27:26,096 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:26,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:26,096 INFO L85 PathProgramCache]: Analyzing trace with hash 270808956, now seen corresponding path program 2 times [2024-06-14 13:27:26,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:26,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023813811] [2024-06-14 13:27:26,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:26,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:27,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:27,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023813811] [2024-06-14 13:27:27,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023813811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:27,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:27,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:27,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058557313] [2024-06-14 13:27:27,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:27,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:27,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:27,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:27,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:27,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:27,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 184 transitions, 1788 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:27,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:27,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:27,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:28,005 INFO L124 PetriNetUnfolderBase]: 1763/2747 cut-off events. [2024-06-14 13:27:28,006 INFO L125 PetriNetUnfolderBase]: For 69129/69129 co-relation queries the response was YES. [2024-06-14 13:27:28,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18261 conditions, 2747 events. 1763/2747 cut-off events. For 69129/69129 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14021 event pairs, 456 based on Foata normal form. 2/2747 useless extension candidates. Maximal degree in co-relation 18186. Up to 2577 conditions per place. [2024-06-14 13:27:28,030 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 182 selfloop transitions, 29 changer transitions 0/216 dead transitions. [2024-06-14 13:27:28,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 216 transitions, 2345 flow [2024-06-14 13:27:28,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:28,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 13:27:28,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-14 13:27:28,031 INFO L175 Difference]: Start difference. First operand has 157 places, 184 transitions, 1788 flow. Second operand 9 states and 169 transitions. [2024-06-14 13:27:28,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 216 transitions, 2345 flow [2024-06-14 13:27:28,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 216 transitions, 2265 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 13:27:28,089 INFO L231 Difference]: Finished difference. Result has 160 places, 187 transitions, 1825 flow [2024-06-14 13:27:28,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1825, PETRI_PLACES=160, PETRI_TRANSITIONS=187} [2024-06-14 13:27:28,089 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 117 predicate places. [2024-06-14 13:27:28,089 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 187 transitions, 1825 flow [2024-06-14 13:27:28,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:28,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:28,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:28,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 13:27:28,090 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:28,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:28,090 INFO L85 PathProgramCache]: Analyzing trace with hash 277475196, now seen corresponding path program 3 times [2024-06-14 13:27:28,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:28,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642849841] [2024-06-14 13:27:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:28,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:28,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:28,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642849841] [2024-06-14 13:27:28,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642849841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:28,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:28,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:28,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272381572] [2024-06-14 13:27:28,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:28,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:28,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:28,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:28,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:29,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:29,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 187 transitions, 1825 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:29,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:29,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:29,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:29,760 INFO L124 PetriNetUnfolderBase]: 1790/2792 cut-off events. [2024-06-14 13:27:29,760 INFO L125 PetriNetUnfolderBase]: For 75187/75187 co-relation queries the response was YES. [2024-06-14 13:27:29,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18774 conditions, 2792 events. 1790/2792 cut-off events. For 75187/75187 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14318 event pairs, 438 based on Foata normal form. 2/2792 useless extension candidates. Maximal degree in co-relation 18698. Up to 2501 conditions per place. [2024-06-14 13:27:29,784 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 160 selfloop transitions, 58 changer transitions 0/223 dead transitions. [2024-06-14 13:27:29,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 223 transitions, 2557 flow [2024-06-14 13:27:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:29,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:29,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-14 13:27:29,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-14 13:27:29,786 INFO L175 Difference]: Start difference. First operand has 160 places, 187 transitions, 1825 flow. Second operand 9 states and 173 transitions. [2024-06-14 13:27:29,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 223 transitions, 2557 flow [2024-06-14 13:27:29,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 223 transitions, 2460 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 13:27:29,839 INFO L231 Difference]: Finished difference. Result has 161 places, 193 transitions, 1962 flow [2024-06-14 13:27:29,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1962, PETRI_PLACES=161, PETRI_TRANSITIONS=193} [2024-06-14 13:27:29,839 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 118 predicate places. [2024-06-14 13:27:29,840 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 193 transitions, 1962 flow [2024-06-14 13:27:29,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:29,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:29,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:29,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 13:27:29,840 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:29,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:29,841 INFO L85 PathProgramCache]: Analyzing trace with hash -10121348, now seen corresponding path program 4 times [2024-06-14 13:27:29,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:29,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208757877] [2024-06-14 13:27:29,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:29,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:30,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:30,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208757877] [2024-06-14 13:27:30,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208757877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:30,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:30,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:30,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841622287] [2024-06-14 13:27:30,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:30,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:30,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:30,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:30,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:30,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:30,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 193 transitions, 1962 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:30,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:30,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:30,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:31,541 INFO L124 PetriNetUnfolderBase]: 1785/2787 cut-off events. [2024-06-14 13:27:31,541 INFO L125 PetriNetUnfolderBase]: For 80823/80823 co-relation queries the response was YES. [2024-06-14 13:27:31,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19187 conditions, 2787 events. 1785/2787 cut-off events. For 80823/80823 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14272 event pairs, 447 based on Foata normal form. 2/2787 useless extension candidates. Maximal degree in co-relation 19112. Up to 2582 conditions per place. [2024-06-14 13:27:31,564 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 183 selfloop transitions, 36 changer transitions 0/224 dead transitions. [2024-06-14 13:27:31,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 224 transitions, 2496 flow [2024-06-14 13:27:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-14 13:27:31,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-14 13:27:31,565 INFO L175 Difference]: Start difference. First operand has 161 places, 193 transitions, 1962 flow. Second operand 9 states and 170 transitions. [2024-06-14 13:27:31,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 224 transitions, 2496 flow [2024-06-14 13:27:31,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 224 transitions, 2337 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-14 13:27:31,635 INFO L231 Difference]: Finished difference. Result has 164 places, 193 transitions, 1884 flow [2024-06-14 13:27:31,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1884, PETRI_PLACES=164, PETRI_TRANSITIONS=193} [2024-06-14 13:27:31,636 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 121 predicate places. [2024-06-14 13:27:31,636 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 193 transitions, 1884 flow [2024-06-14 13:27:31,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:31,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:31,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:31,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 13:27:31,637 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:31,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:31,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1871732352, now seen corresponding path program 1 times [2024-06-14 13:27:31,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:31,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569832228] [2024-06-14 13:27:31,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:31,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:32,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:32,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:32,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569832228] [2024-06-14 13:27:32,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569832228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:32,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:32,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:27:32,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689303497] [2024-06-14 13:27:32,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:32,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:27:32,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:32,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:27:32,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:27:32,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:32,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 193 transitions, 1884 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:32,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:32,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:32,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:33,003 INFO L124 PetriNetUnfolderBase]: 1815/2835 cut-off events. [2024-06-14 13:27:33,003 INFO L125 PetriNetUnfolderBase]: For 86076/86076 co-relation queries the response was YES. [2024-06-14 13:27:33,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19429 conditions, 2835 events. 1815/2835 cut-off events. For 86076/86076 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14579 event pairs, 414 based on Foata normal form. 4/2837 useless extension candidates. Maximal degree in co-relation 19353. Up to 2606 conditions per place. [2024-06-14 13:27:33,025 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 181 selfloop transitions, 38 changer transitions 0/224 dead transitions. [2024-06-14 13:27:33,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 224 transitions, 2575 flow [2024-06-14 13:27:33,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:27:33,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:27:33,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-14 13:27:33,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-14 13:27:33,026 INFO L175 Difference]: Start difference. First operand has 164 places, 193 transitions, 1884 flow. Second operand 7 states and 137 transitions. [2024-06-14 13:27:33,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 224 transitions, 2575 flow [2024-06-14 13:27:33,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 224 transitions, 2479 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 13:27:33,082 INFO L231 Difference]: Finished difference. Result has 164 places, 204 transitions, 2002 flow [2024-06-14 13:27:33,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2002, PETRI_PLACES=164, PETRI_TRANSITIONS=204} [2024-06-14 13:27:33,083 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 121 predicate places. [2024-06-14 13:27:33,083 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 204 transitions, 2002 flow [2024-06-14 13:27:33,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:33,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:33,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:33,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 13:27:33,083 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:33,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash 924840264, now seen corresponding path program 4 times [2024-06-14 13:27:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:33,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574528222] [2024-06-14 13:27:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:33,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:33,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:33,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574528222] [2024-06-14 13:27:33,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574528222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:33,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:33,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:27:33,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206543083] [2024-06-14 13:27:33,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:33,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:27:33,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:33,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:27:33,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:27:34,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:27:34,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 204 transitions, 2002 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:34,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:34,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:27:34,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:34,558 INFO L124 PetriNetUnfolderBase]: 1720/2722 cut-off events. [2024-06-14 13:27:34,558 INFO L125 PetriNetUnfolderBase]: For 94179/94216 co-relation queries the response was YES. [2024-06-14 13:27:34,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19102 conditions, 2722 events. 1720/2722 cut-off events. For 94179/94216 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14308 event pairs, 408 based on Foata normal form. 8/2689 useless extension candidates. Maximal degree in co-relation 19024. Up to 2376 conditions per place. [2024-06-14 13:27:34,582 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 146 selfloop transitions, 40 changer transitions 0/233 dead transitions. [2024-06-14 13:27:34,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 233 transitions, 2508 flow [2024-06-14 13:27:34,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:27:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:27:34,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-14 13:27:34,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-14 13:27:34,584 INFO L175 Difference]: Start difference. First operand has 164 places, 204 transitions, 2002 flow. Second operand 8 states and 157 transitions. [2024-06-14 13:27:34,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 233 transitions, 2508 flow [2024-06-14 13:27:34,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 233 transitions, 2464 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-14 13:27:34,658 INFO L231 Difference]: Finished difference. Result has 171 places, 209 transitions, 2119 flow [2024-06-14 13:27:34,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2119, PETRI_PLACES=171, PETRI_TRANSITIONS=209} [2024-06-14 13:27:34,658 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2024-06-14 13:27:34,658 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 209 transitions, 2119 flow [2024-06-14 13:27:34,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:34,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:34,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:34,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 13:27:34,659 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:34,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:34,660 INFO L85 PathProgramCache]: Analyzing trace with hash 931511464, now seen corresponding path program 5 times [2024-06-14 13:27:34,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:34,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369131623] [2024-06-14 13:27:34,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:34,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:35,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:35,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369131623] [2024-06-14 13:27:35,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369131623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:35,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:35,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:35,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973595659] [2024-06-14 13:27:35,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:35,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:35,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:35,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:35,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:35,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:35,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 209 transitions, 2119 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:35,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:35,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:35,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:36,342 INFO L124 PetriNetUnfolderBase]: 1813/2828 cut-off events. [2024-06-14 13:27:36,342 INFO L125 PetriNetUnfolderBase]: For 95518/95518 co-relation queries the response was YES. [2024-06-14 13:27:36,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20143 conditions, 2828 events. 1813/2828 cut-off events. For 95518/95518 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14560 event pairs, 445 based on Foata normal form. 2/2819 useless extension candidates. Maximal degree in co-relation 20062. Up to 2479 conditions per place. [2024-06-14 13:27:36,365 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 168 selfloop transitions, 67 changer transitions 0/240 dead transitions. [2024-06-14 13:27:36,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 240 transitions, 2847 flow [2024-06-14 13:27:36,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:36,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-14 13:27:36,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-14 13:27:36,367 INFO L175 Difference]: Start difference. First operand has 171 places, 209 transitions, 2119 flow. Second operand 9 states and 175 transitions. [2024-06-14 13:27:36,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 240 transitions, 2847 flow [2024-06-14 13:27:36,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 240 transitions, 2735 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-14 13:27:36,439 INFO L231 Difference]: Finished difference. Result has 175 places, 212 transitions, 2213 flow [2024-06-14 13:27:36,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2213, PETRI_PLACES=175, PETRI_TRANSITIONS=212} [2024-06-14 13:27:36,440 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 132 predicate places. [2024-06-14 13:27:36,440 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 212 transitions, 2213 flow [2024-06-14 13:27:36,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:36,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:36,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:36,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 13:27:36,440 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:36,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:36,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2001733918, now seen corresponding path program 6 times [2024-06-14 13:27:36,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:36,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165543151] [2024-06-14 13:27:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:36,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:37,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:37,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:37,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165543151] [2024-06-14 13:27:37,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165543151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:37,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:37,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:37,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472402212] [2024-06-14 13:27:37,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:37,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:37,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:37,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:37,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:37,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:37,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 212 transitions, 2213 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:37,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:37,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:37,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:38,335 INFO L124 PetriNetUnfolderBase]: 1835/2872 cut-off events. [2024-06-14 13:27:38,336 INFO L125 PetriNetUnfolderBase]: For 101967/101967 co-relation queries the response was YES. [2024-06-14 13:27:38,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20860 conditions, 2872 events. 1835/2872 cut-off events. For 101967/101967 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14842 event pairs, 394 based on Foata normal form. 2/2868 useless extension candidates. Maximal degree in co-relation 20778. Up to 2599 conditions per place. [2024-06-14 13:27:38,358 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 191 selfloop transitions, 49 changer transitions 0/245 dead transitions. [2024-06-14 13:27:38,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 245 transitions, 2864 flow [2024-06-14 13:27:38,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:38,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-14 13:27:38,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:27:38,360 INFO L175 Difference]: Start difference. First operand has 175 places, 212 transitions, 2213 flow. Second operand 9 states and 171 transitions. [2024-06-14 13:27:38,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 245 transitions, 2864 flow [2024-06-14 13:27:38,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 245 transitions, 2654 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-14 13:27:38,427 INFO L231 Difference]: Finished difference. Result has 177 places, 218 transitions, 2202 flow [2024-06-14 13:27:38,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2202, PETRI_PLACES=177, PETRI_TRANSITIONS=218} [2024-06-14 13:27:38,427 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 134 predicate places. [2024-06-14 13:27:38,427 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 218 transitions, 2202 flow [2024-06-14 13:27:38,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:38,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:38,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:38,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 13:27:38,428 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:38,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:38,428 INFO L85 PathProgramCache]: Analyzing trace with hash 924845224, now seen corresponding path program 7 times [2024-06-14 13:27:38,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:38,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922382059] [2024-06-14 13:27:38,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:38,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:39,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:39,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922382059] [2024-06-14 13:27:39,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922382059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:39,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:39,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:39,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703873189] [2024-06-14 13:27:39,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:39,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:39,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:39,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:39,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:39,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:39,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 218 transitions, 2202 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:39,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:39,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:39,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:40,375 INFO L124 PetriNetUnfolderBase]: 1830/2865 cut-off events. [2024-06-14 13:27:40,376 INFO L125 PetriNetUnfolderBase]: For 105670/105670 co-relation queries the response was YES. [2024-06-14 13:27:40,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20736 conditions, 2865 events. 1830/2865 cut-off events. For 105670/105670 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14841 event pairs, 445 based on Foata normal form. 2/2861 useless extension candidates. Maximal degree in co-relation 20653. Up to 2592 conditions per place. [2024-06-14 13:27:40,398 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 190 selfloop transitions, 50 changer transitions 0/245 dead transitions. [2024-06-14 13:27:40,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 245 transitions, 2766 flow [2024-06-14 13:27:40,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-14 13:27:40,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-14 13:27:40,400 INFO L175 Difference]: Start difference. First operand has 177 places, 218 transitions, 2202 flow. Second operand 9 states and 170 transitions. [2024-06-14 13:27:40,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 245 transitions, 2766 flow [2024-06-14 13:27:40,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 245 transitions, 2602 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-14 13:27:40,472 INFO L231 Difference]: Finished difference. Result has 180 places, 218 transitions, 2146 flow [2024-06-14 13:27:40,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2038, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2146, PETRI_PLACES=180, PETRI_TRANSITIONS=218} [2024-06-14 13:27:40,472 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-14 13:27:40,472 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 218 transitions, 2146 flow [2024-06-14 13:27:40,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:40,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:40,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:40,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 13:27:40,473 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:40,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:40,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1153156504, now seen corresponding path program 8 times [2024-06-14 13:27:40,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:40,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405490861] [2024-06-14 13:27:40,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:40,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:41,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:41,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405490861] [2024-06-14 13:27:41,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405490861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:41,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:41,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:41,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351788547] [2024-06-14 13:27:41,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:41,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:41,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:41,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:41,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:41,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:41,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 218 transitions, 2146 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:41,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:41,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:41,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:42,071 INFO L124 PetriNetUnfolderBase]: 1841/2882 cut-off events. [2024-06-14 13:27:42,071 INFO L125 PetriNetUnfolderBase]: For 111389/111389 co-relation queries the response was YES. [2024-06-14 13:27:42,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20944 conditions, 2882 events. 1841/2882 cut-off events. For 111389/111389 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14943 event pairs, 445 based on Foata normal form. 2/2873 useless extension candidates. Maximal degree in co-relation 20860. Up to 2518 conditions per place. [2024-06-14 13:27:42,096 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 168 selfloop transitions, 74 changer transitions 0/247 dead transitions. [2024-06-14 13:27:42,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 247 transitions, 2772 flow [2024-06-14 13:27:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-14 13:27:42,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-14 13:27:42,097 INFO L175 Difference]: Start difference. First operand has 180 places, 218 transitions, 2146 flow. Second operand 9 states and 172 transitions. [2024-06-14 13:27:42,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 247 transitions, 2772 flow [2024-06-14 13:27:42,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 247 transitions, 2638 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 13:27:42,175 INFO L231 Difference]: Finished difference. Result has 180 places, 221 transitions, 2238 flow [2024-06-14 13:27:42,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2012, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2238, PETRI_PLACES=180, PETRI_TRANSITIONS=221} [2024-06-14 13:27:42,176 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-14 13:27:42,176 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 221 transitions, 2238 flow [2024-06-14 13:27:42,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:42,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:42,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:42,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 13:27:42,176 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:42,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:42,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1648652156, now seen corresponding path program 9 times [2024-06-14 13:27:42,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:42,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261966972] [2024-06-14 13:27:42,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:42,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:43,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:43,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:43,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261966972] [2024-06-14 13:27:43,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261966972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:43,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:43,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:43,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557048687] [2024-06-14 13:27:43,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:43,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:43,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:43,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:43,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:43,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:43,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 221 transitions, 2238 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:43,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:43,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:43,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:44,106 INFO L124 PetriNetUnfolderBase]: 1836/2879 cut-off events. [2024-06-14 13:27:44,107 INFO L125 PetriNetUnfolderBase]: For 118939/118939 co-relation queries the response was YES. [2024-06-14 13:27:44,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21305 conditions, 2879 events. 1836/2879 cut-off events. For 118939/118939 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15001 event pairs, 436 based on Foata normal form. 2/2875 useless extension candidates. Maximal degree in co-relation 21222. Up to 2484 conditions per place. [2024-06-14 13:27:44,131 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 166 selfloop transitions, 88 changer transitions 0/259 dead transitions. [2024-06-14 13:27:44,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 259 transitions, 2924 flow [2024-06-14 13:27:44,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:27:44,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:27:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-14 13:27:44,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4458874458874459 [2024-06-14 13:27:44,133 INFO L175 Difference]: Start difference. First operand has 180 places, 221 transitions, 2238 flow. Second operand 11 states and 206 transitions. [2024-06-14 13:27:44,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 259 transitions, 2924 flow [2024-06-14 13:27:44,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 259 transitions, 2718 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-14 13:27:44,230 INFO L231 Difference]: Finished difference. Result has 184 places, 224 transitions, 2296 flow [2024-06-14 13:27:44,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2032, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2296, PETRI_PLACES=184, PETRI_TRANSITIONS=224} [2024-06-14 13:27:44,230 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 141 predicate places. [2024-06-14 13:27:44,231 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 224 transitions, 2296 flow [2024-06-14 13:27:44,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:44,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:44,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:44,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 13:27:44,231 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:44,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:44,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1699948418, now seen corresponding path program 2 times [2024-06-14 13:27:44,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:44,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409315702] [2024-06-14 13:27:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:44,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:44,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:44,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409315702] [2024-06-14 13:27:44,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409315702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:44,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:44,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:27:44,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694412644] [2024-06-14 13:27:44,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:44,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:27:44,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:44,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:27:44,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:27:44,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:44,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 224 transitions, 2296 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:44,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:44,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:44,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:45,498 INFO L124 PetriNetUnfolderBase]: 1856/2908 cut-off events. [2024-06-14 13:27:45,498 INFO L125 PetriNetUnfolderBase]: For 127694/127694 co-relation queries the response was YES. [2024-06-14 13:27:45,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21882 conditions, 2908 events. 1856/2908 cut-off events. For 127694/127694 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15175 event pairs, 439 based on Foata normal form. 4/2910 useless extension candidates. Maximal degree in co-relation 21798. Up to 2693 conditions per place. [2024-06-14 13:27:45,525 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 204 selfloop transitions, 32 changer transitions 0/241 dead transitions. [2024-06-14 13:27:45,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 241 transitions, 2864 flow [2024-06-14 13:27:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:27:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:27:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-06-14 13:27:45,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 13:27:45,526 INFO L175 Difference]: Start difference. First operand has 184 places, 224 transitions, 2296 flow. Second operand 5 states and 105 transitions. [2024-06-14 13:27:45,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 241 transitions, 2864 flow [2024-06-14 13:27:45,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 241 transitions, 2626 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-14 13:27:45,622 INFO L231 Difference]: Finished difference. Result has 180 places, 227 transitions, 2195 flow [2024-06-14 13:27:45,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2058, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2195, PETRI_PLACES=180, PETRI_TRANSITIONS=227} [2024-06-14 13:27:45,623 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-14 13:27:45,623 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 227 transitions, 2195 flow [2024-06-14 13:27:45,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:45,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:45,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:45,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 13:27:45,623 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:45,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:45,624 INFO L85 PathProgramCache]: Analyzing trace with hash 412428716, now seen corresponding path program 3 times [2024-06-14 13:27:45,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:45,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096053437] [2024-06-14 13:27:45,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:45,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:46,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:46,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096053437] [2024-06-14 13:27:46,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096053437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:46,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:46,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:27:46,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135635381] [2024-06-14 13:27:46,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:46,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:27:46,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:46,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:27:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:27:46,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:46,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 227 transitions, 2195 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:46,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:46,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:46,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:46,916 INFO L124 PetriNetUnfolderBase]: 1844/2892 cut-off events. [2024-06-14 13:27:46,916 INFO L125 PetriNetUnfolderBase]: For 121936/121936 co-relation queries the response was YES. [2024-06-14 13:27:46,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21144 conditions, 2892 events. 1844/2892 cut-off events. For 121936/121936 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15037 event pairs, 446 based on Foata normal form. 4/2894 useless extension candidates. Maximal degree in co-relation 21059. Up to 2645 conditions per place. [2024-06-14 13:27:46,941 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 201 selfloop transitions, 38 changer transitions 0/244 dead transitions. [2024-06-14 13:27:46,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 244 transitions, 2751 flow [2024-06-14 13:27:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:27:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:27:46,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-14 13:27:46,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2024-06-14 13:27:46,942 INFO L175 Difference]: Start difference. First operand has 180 places, 227 transitions, 2195 flow. Second operand 6 states and 121 transitions. [2024-06-14 13:27:46,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 244 transitions, 2751 flow [2024-06-14 13:27:47,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 244 transitions, 2676 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-14 13:27:47,030 INFO L231 Difference]: Finished difference. Result has 183 places, 227 transitions, 2208 flow [2024-06-14 13:27:47,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2208, PETRI_PLACES=183, PETRI_TRANSITIONS=227} [2024-06-14 13:27:47,032 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 140 predicate places. [2024-06-14 13:27:47,032 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 227 transitions, 2208 flow [2024-06-14 13:27:47,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:47,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:47,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:47,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 13:27:47,032 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:47,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:47,033 INFO L85 PathProgramCache]: Analyzing trace with hash 191714854, now seen corresponding path program 1 times [2024-06-14 13:27:47,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:47,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581462181] [2024-06-14 13:27:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:47,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:47,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:47,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:47,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581462181] [2024-06-14 13:27:47,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581462181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:47,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:47,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:27:47,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948155663] [2024-06-14 13:27:47,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:47,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:27:47,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:47,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:27:47,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:27:47,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:27:47,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 227 transitions, 2208 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:47,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:47,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:27:47,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:48,198 INFO L124 PetriNetUnfolderBase]: 1768/2827 cut-off events. [2024-06-14 13:27:48,199 INFO L125 PetriNetUnfolderBase]: For 127523/127525 co-relation queries the response was YES. [2024-06-14 13:27:48,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21041 conditions, 2827 events. 1768/2827 cut-off events. For 127523/127525 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15105 event pairs, 516 based on Foata normal form. 3/2818 useless extension candidates. Maximal degree in co-relation 20955. Up to 2554 conditions per place. [2024-06-14 13:27:48,224 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 205 selfloop transitions, 25 changer transitions 0/252 dead transitions. [2024-06-14 13:27:48,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 252 transitions, 2858 flow [2024-06-14 13:27:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:27:48,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:27:48,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-14 13:27:48,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-06-14 13:27:48,225 INFO L175 Difference]: Start difference. First operand has 183 places, 227 transitions, 2208 flow. Second operand 7 states and 139 transitions. [2024-06-14 13:27:48,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 252 transitions, 2858 flow [2024-06-14 13:27:48,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 252 transitions, 2767 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 13:27:48,311 INFO L231 Difference]: Finished difference. Result has 185 places, 233 transitions, 2241 flow [2024-06-14 13:27:48,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2241, PETRI_PLACES=185, PETRI_TRANSITIONS=233} [2024-06-14 13:27:48,312 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 142 predicate places. [2024-06-14 13:27:48,312 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 233 transitions, 2241 flow [2024-06-14 13:27:48,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:48,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:48,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:48,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 13:27:48,312 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:48,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:48,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1664863834, now seen corresponding path program 2 times [2024-06-14 13:27:48,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:48,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983606540] [2024-06-14 13:27:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:48,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:48,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:48,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983606540] [2024-06-14 13:27:48,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983606540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:48,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:48,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:27:48,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479436173] [2024-06-14 13:27:48,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:48,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:27:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:48,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:27:48,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:27:49,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:27:49,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 233 transitions, 2241 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:49,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:49,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:27:49,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:49,586 INFO L124 PetriNetUnfolderBase]: 1798/2865 cut-off events. [2024-06-14 13:27:49,586 INFO L125 PetriNetUnfolderBase]: For 129401/129403 co-relation queries the response was YES. [2024-06-14 13:27:49,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21402 conditions, 2865 events. 1798/2865 cut-off events. For 129401/129403 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15258 event pairs, 517 based on Foata normal form. 3/2856 useless extension candidates. Maximal degree in co-relation 21316. Up to 2606 conditions per place. [2024-06-14 13:27:49,612 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 209 selfloop transitions, 25 changer transitions 0/256 dead transitions. [2024-06-14 13:27:49,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 256 transitions, 2837 flow [2024-06-14 13:27:49,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:27:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:27:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-14 13:27:49,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-06-14 13:27:49,613 INFO L175 Difference]: Start difference. First operand has 185 places, 233 transitions, 2241 flow. Second operand 7 states and 134 transitions. [2024-06-14 13:27:49,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 256 transitions, 2837 flow [2024-06-14 13:27:49,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 256 transitions, 2784 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-14 13:27:49,703 INFO L231 Difference]: Finished difference. Result has 189 places, 241 transitions, 2333 flow [2024-06-14 13:27:49,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2195, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2333, PETRI_PLACES=189, PETRI_TRANSITIONS=241} [2024-06-14 13:27:49,704 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 146 predicate places. [2024-06-14 13:27:49,704 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 241 transitions, 2333 flow [2024-06-14 13:27:49,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:49,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:49,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:49,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 13:27:49,704 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:49,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:49,705 INFO L85 PathProgramCache]: Analyzing trace with hash 392088004, now seen corresponding path program 3 times [2024-06-14 13:27:49,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:49,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680013904] [2024-06-14 13:27:49,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:49,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:50,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:50,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680013904] [2024-06-14 13:27:50,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680013904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:50,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:50,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:27:50,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249714924] [2024-06-14 13:27:50,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:50,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:27:50,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:50,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:27:50,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:27:50,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:27:50,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 241 transitions, 2333 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:50,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:50,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:27:50,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:51,000 INFO L124 PetriNetUnfolderBase]: 1789/2853 cut-off events. [2024-06-14 13:27:51,000 INFO L125 PetriNetUnfolderBase]: For 131979/131981 co-relation queries the response was YES. [2024-06-14 13:27:51,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21421 conditions, 2853 events. 1789/2853 cut-off events. For 131979/131981 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15218 event pairs, 516 based on Foata normal form. 3/2844 useless extension candidates. Maximal degree in co-relation 21333. Up to 2591 conditions per place. [2024-06-14 13:27:51,034 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 212 selfloop transitions, 23 changer transitions 0/257 dead transitions. [2024-06-14 13:27:51,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 257 transitions, 2853 flow [2024-06-14 13:27:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:27:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:27:51,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-14 13:27:51,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-14 13:27:51,035 INFO L175 Difference]: Start difference. First operand has 189 places, 241 transitions, 2333 flow. Second operand 6 states and 122 transitions. [2024-06-14 13:27:51,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 257 transitions, 2853 flow [2024-06-14 13:27:51,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 257 transitions, 2768 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-14 13:27:51,148 INFO L231 Difference]: Finished difference. Result has 191 places, 241 transitions, 2305 flow [2024-06-14 13:27:51,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2305, PETRI_PLACES=191, PETRI_TRANSITIONS=241} [2024-06-14 13:27:51,149 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 148 predicate places. [2024-06-14 13:27:51,149 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 241 transitions, 2305 flow [2024-06-14 13:27:51,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:51,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:51,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:51,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 13:27:51,153 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:51,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:51,153 INFO L85 PathProgramCache]: Analyzing trace with hash 392334268, now seen corresponding path program 1 times [2024-06-14 13:27:51,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:51,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628666245] [2024-06-14 13:27:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:51,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:51,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628666245] [2024-06-14 13:27:51,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628666245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:51,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:51,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:27:51,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445431940] [2024-06-14 13:27:51,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:51,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:27:51,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:51,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:27:51,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:27:52,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:52,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 241 transitions, 2305 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:52,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:52,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:52,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:52,524 INFO L124 PetriNetUnfolderBase]: 1883/2945 cut-off events. [2024-06-14 13:27:52,524 INFO L125 PetriNetUnfolderBase]: For 132105/132105 co-relation queries the response was YES. [2024-06-14 13:27:52,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21881 conditions, 2945 events. 1883/2945 cut-off events. For 132105/132105 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15198 event pairs, 578 based on Foata normal form. 2/2945 useless extension candidates. Maximal degree in co-relation 21792. Up to 2813 conditions per place. [2024-06-14 13:27:52,552 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 233 selfloop transitions, 13 changer transitions 0/251 dead transitions. [2024-06-14 13:27:52,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 251 transitions, 2843 flow [2024-06-14 13:27:52,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:27:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:27:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-06-14 13:27:52,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:27:52,553 INFO L175 Difference]: Start difference. First operand has 191 places, 241 transitions, 2305 flow. Second operand 5 states and 95 transitions. [2024-06-14 13:27:52,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 251 transitions, 2843 flow [2024-06-14 13:27:52,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 251 transitions, 2786 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 13:27:52,667 INFO L231 Difference]: Finished difference. Result has 191 places, 243 transitions, 2307 flow [2024-06-14 13:27:52,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2307, PETRI_PLACES=191, PETRI_TRANSITIONS=243} [2024-06-14 13:27:52,667 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 148 predicate places. [2024-06-14 13:27:52,668 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 243 transitions, 2307 flow [2024-06-14 13:27:52,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:52,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:52,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:52,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 13:27:52,668 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:52,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:52,668 INFO L85 PathProgramCache]: Analyzing trace with hash -454438995, now seen corresponding path program 1 times [2024-06-14 13:27:52,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:52,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752445430] [2024-06-14 13:27:52,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:52,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:53,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:53,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752445430] [2024-06-14 13:27:53,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752445430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:53,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:53,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:53,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145897160] [2024-06-14 13:27:53,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:53,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:53,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:53,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:53,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:53,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:53,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 243 transitions, 2307 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:53,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:53,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:53,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:54,364 INFO L124 PetriNetUnfolderBase]: 1900/2972 cut-off events. [2024-06-14 13:27:54,364 INFO L125 PetriNetUnfolderBase]: For 140589/140589 co-relation queries the response was YES. [2024-06-14 13:27:54,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22228 conditions, 2972 events. 1900/2972 cut-off events. For 140589/140589 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15426 event pairs, 430 based on Foata normal form. 4/2974 useless extension candidates. Maximal degree in co-relation 22138. Up to 2767 conditions per place. [2024-06-14 13:27:54,391 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 242 selfloop transitions, 28 changer transitions 0/275 dead transitions. [2024-06-14 13:27:54,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 275 transitions, 2973 flow [2024-06-14 13:27:54,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:54,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 13:27:54,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-14 13:27:54,392 INFO L175 Difference]: Start difference. First operand has 191 places, 243 transitions, 2307 flow. Second operand 9 states and 169 transitions. [2024-06-14 13:27:54,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 275 transitions, 2973 flow [2024-06-14 13:27:54,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 275 transitions, 2930 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-14 13:27:54,497 INFO L231 Difference]: Finished difference. Result has 197 places, 245 transitions, 2365 flow [2024-06-14 13:27:54,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2264, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2365, PETRI_PLACES=197, PETRI_TRANSITIONS=245} [2024-06-14 13:27:54,498 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 154 predicate places. [2024-06-14 13:27:54,498 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 245 transitions, 2365 flow [2024-06-14 13:27:54,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:54,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:54,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:54,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 13:27:54,498 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:54,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:54,499 INFO L85 PathProgramCache]: Analyzing trace with hash -454586865, now seen corresponding path program 2 times [2024-06-14 13:27:54,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:54,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017386669] [2024-06-14 13:27:54,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:54,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:55,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:55,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017386669] [2024-06-14 13:27:55,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017386669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:55,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:55,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:55,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99451662] [2024-06-14 13:27:55,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:55,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:55,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:55,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:55,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:55,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:55,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 245 transitions, 2365 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:55,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:55,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:55,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:56,210 INFO L124 PetriNetUnfolderBase]: 1942/3038 cut-off events. [2024-06-14 13:27:56,210 INFO L125 PetriNetUnfolderBase]: For 151196/151196 co-relation queries the response was YES. [2024-06-14 13:27:56,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23132 conditions, 3038 events. 1942/3038 cut-off events. For 151196/151196 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 15887 event pairs, 426 based on Foata normal form. 4/3040 useless extension candidates. Maximal degree in co-relation 23041. Up to 2768 conditions per place. [2024-06-14 13:27:56,240 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 246 selfloop transitions, 33 changer transitions 0/284 dead transitions. [2024-06-14 13:27:56,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 284 transitions, 3281 flow [2024-06-14 13:27:56,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:56,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:56,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-14 13:27:56,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-14 13:27:56,245 INFO L175 Difference]: Start difference. First operand has 197 places, 245 transitions, 2365 flow. Second operand 9 states and 172 transitions. [2024-06-14 13:27:56,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 284 transitions, 3281 flow [2024-06-14 13:27:56,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 284 transitions, 3200 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 13:27:56,361 INFO L231 Difference]: Finished difference. Result has 200 places, 251 transitions, 2486 flow [2024-06-14 13:27:56,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2486, PETRI_PLACES=200, PETRI_TRANSITIONS=251} [2024-06-14 13:27:56,361 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 157 predicate places. [2024-06-14 13:27:56,361 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 251 transitions, 2486 flow [2024-06-14 13:27:56,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:56,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:56,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:56,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 13:27:56,362 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:56,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:56,362 INFO L85 PathProgramCache]: Analyzing trace with hash -255137205, now seen corresponding path program 3 times [2024-06-14 13:27:56,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:56,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993383448] [2024-06-14 13:27:56,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:56,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:57,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:57,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993383448] [2024-06-14 13:27:57,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993383448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:57,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:57,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:57,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039050854] [2024-06-14 13:27:57,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:57,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:57,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:57,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:57,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:57,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:57,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 251 transitions, 2486 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:57,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:57,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:57,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:58,068 INFO L124 PetriNetUnfolderBase]: 1934/3026 cut-off events. [2024-06-14 13:27:58,068 INFO L125 PetriNetUnfolderBase]: For 155895/155895 co-relation queries the response was YES. [2024-06-14 13:27:58,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23274 conditions, 3026 events. 1934/3026 cut-off events. For 155895/155895 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15785 event pairs, 433 based on Foata normal form. 4/3028 useless extension candidates. Maximal degree in co-relation 23181. Up to 2821 conditions per place. [2024-06-14 13:27:58,096 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 248 selfloop transitions, 28 changer transitions 0/281 dead transitions. [2024-06-14 13:27:58,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 281 transitions, 3130 flow [2024-06-14 13:27:58,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:58,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 13:27:58,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-14 13:27:58,097 INFO L175 Difference]: Start difference. First operand has 200 places, 251 transitions, 2486 flow. Second operand 9 states and 169 transitions. [2024-06-14 13:27:58,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 281 transitions, 3130 flow [2024-06-14 13:27:58,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 281 transitions, 3009 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-14 13:27:58,211 INFO L231 Difference]: Finished difference. Result has 204 places, 251 transitions, 2428 flow [2024-06-14 13:27:58,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2428, PETRI_PLACES=204, PETRI_TRANSITIONS=251} [2024-06-14 13:27:58,211 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 161 predicate places. [2024-06-14 13:27:58,211 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 251 transitions, 2428 flow [2024-06-14 13:27:58,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:58,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:58,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:58,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 13:27:58,212 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:27:58,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:58,212 INFO L85 PathProgramCache]: Analyzing trace with hash -402480611, now seen corresponding path program 4 times [2024-06-14 13:27:58,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:58,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311369603] [2024-06-14 13:27:58,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:58,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:59,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:59,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311369603] [2024-06-14 13:27:59,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311369603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:59,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:59,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:27:59,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595262898] [2024-06-14 13:27:59,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:59,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:27:59,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:59,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:27:59,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:27:59,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:27:59,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 251 transitions, 2428 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:59,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:59,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:27:59,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:59,854 INFO L124 PetriNetUnfolderBase]: 1951/3053 cut-off events. [2024-06-14 13:27:59,854 INFO L125 PetriNetUnfolderBase]: For 162423/162423 co-relation queries the response was YES. [2024-06-14 13:27:59,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23483 conditions, 3053 events. 1951/3053 cut-off events. For 162423/162423 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 15957 event pairs, 310 based on Foata normal form. 4/3055 useless extension candidates. Maximal degree in co-relation 23388. Up to 2797 conditions per place. [2024-06-14 13:27:59,885 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 259 selfloop transitions, 27 changer transitions 0/291 dead transitions. [2024-06-14 13:27:59,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 291 transitions, 3218 flow [2024-06-14 13:27:59,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:59,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-14 13:27:59,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-14 13:27:59,886 INFO L175 Difference]: Start difference. First operand has 204 places, 251 transitions, 2428 flow. Second operand 9 states and 170 transitions. [2024-06-14 13:27:59,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 291 transitions, 3218 flow [2024-06-14 13:28:00,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 291 transitions, 3161 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 13:28:00,010 INFO L231 Difference]: Finished difference. Result has 208 places, 257 transitions, 2564 flow [2024-06-14 13:28:00,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2564, PETRI_PLACES=208, PETRI_TRANSITIONS=257} [2024-06-14 13:28:00,011 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 165 predicate places. [2024-06-14 13:28:00,011 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 257 transitions, 2564 flow [2024-06-14 13:28:00,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:00,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:00,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:00,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 13:28:00,012 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:00,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:00,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1256763385, now seen corresponding path program 5 times [2024-06-14 13:28:00,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:00,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426895872] [2024-06-14 13:28:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:00,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:00,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:00,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426895872] [2024-06-14 13:28:00,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426895872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:00,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:00,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:28:00,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235962823] [2024-06-14 13:28:00,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:00,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:28:00,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:00,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:28:00,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:28:01,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:01,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 257 transitions, 2564 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:01,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:01,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:01,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:01,784 INFO L124 PetriNetUnfolderBase]: 1993/3119 cut-off events. [2024-06-14 13:28:01,784 INFO L125 PetriNetUnfolderBase]: For 175843/175843 co-relation queries the response was YES. [2024-06-14 13:28:01,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24491 conditions, 3119 events. 1993/3119 cut-off events. For 175843/175843 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16422 event pairs, 396 based on Foata normal form. 4/3121 useless extension candidates. Maximal degree in co-relation 24393. Up to 2835 conditions per place. [2024-06-14 13:28:01,812 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 256 selfloop transitions, 36 changer transitions 0/297 dead transitions. [2024-06-14 13:28:01,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 297 transitions, 3516 flow [2024-06-14 13:28:01,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:28:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:28:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-14 13:28:01,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-14 13:28:01,813 INFO L175 Difference]: Start difference. First operand has 208 places, 257 transitions, 2564 flow. Second operand 9 states and 174 transitions. [2024-06-14 13:28:01,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 297 transitions, 3516 flow [2024-06-14 13:28:01,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 297 transitions, 3392 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-14 13:28:01,947 INFO L231 Difference]: Finished difference. Result has 214 places, 262 transitions, 2636 flow [2024-06-14 13:28:01,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2440, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2636, PETRI_PLACES=214, PETRI_TRANSITIONS=262} [2024-06-14 13:28:01,948 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 171 predicate places. [2024-06-14 13:28:01,948 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 262 transitions, 2636 flow [2024-06-14 13:28:01,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:01,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:01,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:01,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 13:28:01,949 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:01,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:01,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1256911255, now seen corresponding path program 6 times [2024-06-14 13:28:01,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:01,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407910582] [2024-06-14 13:28:01,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:01,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:02,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:02,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407910582] [2024-06-14 13:28:02,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407910582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:02,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:02,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:28:02,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133003679] [2024-06-14 13:28:02,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:02,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:28:02,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:02,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:28:02,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:28:02,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:02,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 262 transitions, 2636 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:02,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:02,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:02,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:03,655 INFO L124 PetriNetUnfolderBase]: 1985/3107 cut-off events. [2024-06-14 13:28:03,655 INFO L125 PetriNetUnfolderBase]: For 178722/178722 co-relation queries the response was YES. [2024-06-14 13:28:03,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24498 conditions, 3107 events. 1985/3107 cut-off events. For 178722/178722 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 16310 event pairs, 406 based on Foata normal form. 4/3109 useless extension candidates. Maximal degree in co-relation 24397. Up to 2875 conditions per place. [2024-06-14 13:28:03,689 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 255 selfloop transitions, 35 changer transitions 0/295 dead transitions. [2024-06-14 13:28:03,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 295 transitions, 3349 flow [2024-06-14 13:28:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:28:03,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:28:03,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-14 13:28:03,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-14 13:28:03,691 INFO L175 Difference]: Start difference. First operand has 214 places, 262 transitions, 2636 flow. Second operand 9 states and 170 transitions. [2024-06-14 13:28:03,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 295 transitions, 3349 flow [2024-06-14 13:28:03,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 295 transitions, 3188 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-14 13:28:03,882 INFO L231 Difference]: Finished difference. Result has 218 places, 263 transitions, 2590 flow [2024-06-14 13:28:03,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2505, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2590, PETRI_PLACES=218, PETRI_TRANSITIONS=263} [2024-06-14 13:28:03,883 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 175 predicate places. [2024-06-14 13:28:03,883 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 263 transitions, 2590 flow [2024-06-14 13:28:03,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:03,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:03,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:03,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 13:28:03,883 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:03,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:03,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1375822039, now seen corresponding path program 1 times [2024-06-14 13:28:03,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:03,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974777419] [2024-06-14 13:28:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:03,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:05,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:05,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974777419] [2024-06-14 13:28:05,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974777419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:05,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:05,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:05,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112317194] [2024-06-14 13:28:05,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:05,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:05,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:05,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:05,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:05,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:05,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 263 transitions, 2590 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:05,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:05,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:05,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:06,052 INFO L124 PetriNetUnfolderBase]: 2043/3205 cut-off events. [2024-06-14 13:28:06,052 INFO L125 PetriNetUnfolderBase]: For 196855/196855 co-relation queries the response was YES. [2024-06-14 13:28:06,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25058 conditions, 3205 events. 2043/3205 cut-off events. For 196855/196855 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 16982 event pairs, 413 based on Foata normal form. 16/3219 useless extension candidates. Maximal degree in co-relation 24955. Up to 2917 conditions per place. [2024-06-14 13:28:06,087 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 266 selfloop transitions, 30 changer transitions 0/301 dead transitions. [2024-06-14 13:28:06,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 301 transitions, 3356 flow [2024-06-14 13:28:06,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:06,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-14 13:28:06,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-14 13:28:06,088 INFO L175 Difference]: Start difference. First operand has 218 places, 263 transitions, 2590 flow. Second operand 10 states and 188 transitions. [2024-06-14 13:28:06,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 301 transitions, 3356 flow [2024-06-14 13:28:06,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 301 transitions, 3290 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 13:28:06,297 INFO L231 Difference]: Finished difference. Result has 221 places, 264 transitions, 2619 flow [2024-06-14 13:28:06,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2619, PETRI_PLACES=221, PETRI_TRANSITIONS=264} [2024-06-14 13:28:06,297 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 178 predicate places. [2024-06-14 13:28:06,297 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 264 transitions, 2619 flow [2024-06-14 13:28:06,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:06,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:06,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:06,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 13:28:06,298 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:06,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:06,298 INFO L85 PathProgramCache]: Analyzing trace with hash 4445593, now seen corresponding path program 2 times [2024-06-14 13:28:06,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:06,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845983395] [2024-06-14 13:28:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:06,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:07,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:07,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845983395] [2024-06-14 13:28:07,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845983395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:07,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:07,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:07,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524008313] [2024-06-14 13:28:07,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:07,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:07,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:07,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:07,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:07,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:07,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 264 transitions, 2619 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:07,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:07,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:07,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:08,496 INFO L124 PetriNetUnfolderBase]: 2101/3303 cut-off events. [2024-06-14 13:28:08,496 INFO L125 PetriNetUnfolderBase]: For 207434/207434 co-relation queries the response was YES. [2024-06-14 13:28:08,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25882 conditions, 3303 events. 2101/3303 cut-off events. For 207434/207434 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 17764 event pairs, 424 based on Foata normal form. 16/3317 useless extension candidates. Maximal degree in co-relation 25778. Up to 3015 conditions per place. [2024-06-14 13:28:08,531 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 267 selfloop transitions, 30 changer transitions 0/302 dead transitions. [2024-06-14 13:28:08,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 302 transitions, 3389 flow [2024-06-14 13:28:08,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:08,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-14 13:28:08,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-14 13:28:08,533 INFO L175 Difference]: Start difference. First operand has 221 places, 264 transitions, 2619 flow. Second operand 10 states and 188 transitions. [2024-06-14 13:28:08,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 302 transitions, 3389 flow [2024-06-14 13:28:08,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 302 transitions, 3320 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 13:28:08,725 INFO L231 Difference]: Finished difference. Result has 223 places, 265 transitions, 2647 flow [2024-06-14 13:28:08,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2647, PETRI_PLACES=223, PETRI_TRANSITIONS=265} [2024-06-14 13:28:08,725 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 180 predicate places. [2024-06-14 13:28:08,725 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 265 transitions, 2647 flow [2024-06-14 13:28:08,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:08,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:08,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:08,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 13:28:08,726 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:08,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:08,727 INFO L85 PathProgramCache]: Analyzing trace with hash 11797243, now seen corresponding path program 3 times [2024-06-14 13:28:08,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:08,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294408008] [2024-06-14 13:28:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:08,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:09,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:09,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294408008] [2024-06-14 13:28:09,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294408008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:09,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:09,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:09,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508461507] [2024-06-14 13:28:09,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:09,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:09,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:09,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:09,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:09,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:09,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 265 transitions, 2647 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:09,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:09,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:09,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:10,709 INFO L124 PetriNetUnfolderBase]: 2159/3405 cut-off events. [2024-06-14 13:28:10,709 INFO L125 PetriNetUnfolderBase]: For 217412/217412 co-relation queries the response was YES. [2024-06-14 13:28:10,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26682 conditions, 3405 events. 2159/3405 cut-off events. For 217412/217412 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18531 event pairs, 438 based on Foata normal form. 16/3419 useless extension candidates. Maximal degree in co-relation 26577. Up to 3086 conditions per place. [2024-06-14 13:28:10,742 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 260 selfloop transitions, 38 changer transitions 0/303 dead transitions. [2024-06-14 13:28:10,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 303 transitions, 3425 flow [2024-06-14 13:28:10,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:10,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-14 13:28:10,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-14 13:28:10,743 INFO L175 Difference]: Start difference. First operand has 223 places, 265 transitions, 2647 flow. Second operand 10 states and 189 transitions. [2024-06-14 13:28:10,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 303 transitions, 3425 flow [2024-06-14 13:28:10,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 303 transitions, 3354 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 13:28:10,953 INFO L231 Difference]: Finished difference. Result has 225 places, 266 transitions, 2695 flow [2024-06-14 13:28:10,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2695, PETRI_PLACES=225, PETRI_TRANSITIONS=266} [2024-06-14 13:28:10,954 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 182 predicate places. [2024-06-14 13:28:10,954 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 266 transitions, 2695 flow [2024-06-14 13:28:10,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:10,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:10,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:10,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 13:28:10,955 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:10,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:10,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1582742389, now seen corresponding path program 4 times [2024-06-14 13:28:10,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:10,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049562128] [2024-06-14 13:28:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:10,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:12,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:12,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049562128] [2024-06-14 13:28:12,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049562128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:12,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:12,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:12,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001707059] [2024-06-14 13:28:12,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:12,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:12,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:12,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:12,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:12,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:12,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 266 transitions, 2695 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:12,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:12,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:12,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:13,120 INFO L124 PetriNetUnfolderBase]: 2261/3585 cut-off events. [2024-06-14 13:28:13,121 INFO L125 PetriNetUnfolderBase]: For 236179/236179 co-relation queries the response was YES. [2024-06-14 13:28:13,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28435 conditions, 3585 events. 2261/3585 cut-off events. For 236179/236179 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 19822 event pairs, 458 based on Foata normal form. 12/3595 useless extension candidates. Maximal degree in co-relation 28329. Up to 2848 conditions per place. [2024-06-14 13:28:13,158 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 260 selfloop transitions, 45 changer transitions 0/310 dead transitions. [2024-06-14 13:28:13,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 310 transitions, 3733 flow [2024-06-14 13:28:13,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:13,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-14 13:28:13,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-14 13:28:13,160 INFO L175 Difference]: Start difference. First operand has 225 places, 266 transitions, 2695 flow. Second operand 10 states and 194 transitions. [2024-06-14 13:28:13,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 310 transitions, 3733 flow [2024-06-14 13:28:13,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 310 transitions, 3644 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 13:28:13,369 INFO L231 Difference]: Finished difference. Result has 228 places, 268 transitions, 2789 flow [2024-06-14 13:28:13,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2606, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2789, PETRI_PLACES=228, PETRI_TRANSITIONS=268} [2024-06-14 13:28:13,370 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 185 predicate places. [2024-06-14 13:28:13,370 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 268 transitions, 2789 flow [2024-06-14 13:28:13,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:13,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:13,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:13,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 13:28:13,370 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:13,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:13,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1256917207, now seen corresponding path program 5 times [2024-06-14 13:28:13,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:13,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981517651] [2024-06-14 13:28:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:13,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:14,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:14,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:14,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981517651] [2024-06-14 13:28:14,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981517651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:14,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:14,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:14,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409576307] [2024-06-14 13:28:14,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:14,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:14,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:14,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:14,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:14,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:14,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 268 transitions, 2789 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:14,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:14,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:14,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:15,524 INFO L124 PetriNetUnfolderBase]: 2319/3693 cut-off events. [2024-06-14 13:28:15,524 INFO L125 PetriNetUnfolderBase]: For 252512/252512 co-relation queries the response was YES. [2024-06-14 13:28:15,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29451 conditions, 3693 events. 2319/3693 cut-off events. For 252512/252512 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 20721 event pairs, 486 based on Foata normal form. 16/3707 useless extension candidates. Maximal degree in co-relation 29343. Up to 3358 conditions per place. [2024-06-14 13:28:15,561 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 266 selfloop transitions, 37 changer transitions 0/308 dead transitions. [2024-06-14 13:28:15,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 308 transitions, 3587 flow [2024-06-14 13:28:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-14 13:28:15,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-14 13:28:15,563 INFO L175 Difference]: Start difference. First operand has 228 places, 268 transitions, 2789 flow. Second operand 10 states and 189 transitions. [2024-06-14 13:28:15,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 308 transitions, 3587 flow [2024-06-14 13:28:15,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 308 transitions, 3492 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 13:28:15,814 INFO L231 Difference]: Finished difference. Result has 231 places, 269 transitions, 2815 flow [2024-06-14 13:28:15,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2694, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2815, PETRI_PLACES=231, PETRI_TRANSITIONS=269} [2024-06-14 13:28:15,814 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 188 predicate places. [2024-06-14 13:28:15,814 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 269 transitions, 2815 flow [2024-06-14 13:28:15,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:15,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:15,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:15,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 13:28:15,815 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:15,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:15,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1195272531, now seen corresponding path program 7 times [2024-06-14 13:28:15,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:15,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774106102] [2024-06-14 13:28:15,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:15,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:16,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:16,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774106102] [2024-06-14 13:28:16,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774106102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:16,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:16,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:28:16,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001716765] [2024-06-14 13:28:16,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:16,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:28:16,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:16,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:28:16,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:28:16,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:16,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 269 transitions, 2815 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:16,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:16,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:16,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:17,614 INFO L124 PetriNetUnfolderBase]: 2336/3717 cut-off events. [2024-06-14 13:28:17,614 INFO L125 PetriNetUnfolderBase]: For 248559/248559 co-relation queries the response was YES. [2024-06-14 13:28:17,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29725 conditions, 3717 events. 2336/3717 cut-off events. For 248559/248559 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 20845 event pairs, 493 based on Foata normal form. 4/3715 useless extension candidates. Maximal degree in co-relation 29616. Up to 3414 conditions per place. [2024-06-14 13:28:17,656 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 246 selfloop transitions, 48 changer transitions 0/299 dead transitions. [2024-06-14 13:28:17,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 299 transitions, 3541 flow [2024-06-14 13:28:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:28:17,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:28:17,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-14 13:28:17,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:28:17,657 INFO L175 Difference]: Start difference. First operand has 231 places, 269 transitions, 2815 flow. Second operand 9 states and 171 transitions. [2024-06-14 13:28:17,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 299 transitions, 3541 flow [2024-06-14 13:28:17,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 299 transitions, 3450 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 13:28:17,894 INFO L231 Difference]: Finished difference. Result has 232 places, 271 transitions, 2883 flow [2024-06-14 13:28:17,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2724, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2883, PETRI_PLACES=232, PETRI_TRANSITIONS=271} [2024-06-14 13:28:17,894 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 189 predicate places. [2024-06-14 13:28:17,894 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 271 transitions, 2883 flow [2024-06-14 13:28:17,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:17,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:17,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:17,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 13:28:17,895 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:17,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1394718471, now seen corresponding path program 8 times [2024-06-14 13:28:17,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:17,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117380433] [2024-06-14 13:28:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:17,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:18,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:18,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117380433] [2024-06-14 13:28:18,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117380433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:18,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:18,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:28:18,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659900626] [2024-06-14 13:28:18,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:18,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:28:18,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:18,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:28:18,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:28:18,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:18,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 271 transitions, 2883 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:18,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:18,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:18,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:19,735 INFO L124 PetriNetUnfolderBase]: 2353/3734 cut-off events. [2024-06-14 13:28:19,735 INFO L125 PetriNetUnfolderBase]: For 258001/258001 co-relation queries the response was YES. [2024-06-14 13:28:19,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30134 conditions, 3734 events. 2353/3734 cut-off events. For 258001/258001 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 20925 event pairs, 488 based on Foata normal form. 4/3732 useless extension candidates. Maximal degree in co-relation 30024. Up to 3441 conditions per place. [2024-06-14 13:28:19,774 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 247 selfloop transitions, 49 changer transitions 0/301 dead transitions. [2024-06-14 13:28:19,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 301 transitions, 3617 flow [2024-06-14 13:28:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:28:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:28:19,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-14 13:28:19,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-14 13:28:19,775 INFO L175 Difference]: Start difference. First operand has 232 places, 271 transitions, 2883 flow. Second operand 9 states and 170 transitions. [2024-06-14 13:28:19,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 301 transitions, 3617 flow [2024-06-14 13:28:20,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 301 transitions, 3478 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 13:28:20,019 INFO L231 Difference]: Finished difference. Result has 234 places, 273 transitions, 2909 flow [2024-06-14 13:28:20,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2909, PETRI_PLACES=234, PETRI_TRANSITIONS=273} [2024-06-14 13:28:20,019 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 191 predicate places. [2024-06-14 13:28:20,020 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 273 transitions, 2909 flow [2024-06-14 13:28:20,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:20,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:20,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:20,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 13:28:20,020 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:20,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:20,020 INFO L85 PathProgramCache]: Analyzing trace with hash 205265769, now seen corresponding path program 9 times [2024-06-14 13:28:20,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:20,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554695915] [2024-06-14 13:28:20,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:20,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:20,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:20,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554695915] [2024-06-14 13:28:20,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554695915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:20,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:20,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:28:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469069583] [2024-06-14 13:28:20,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:20,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:28:20,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:20,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:28:20,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:28:21,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:21,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 273 transitions, 2909 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:21,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:21,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:21,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:21,813 INFO L124 PetriNetUnfolderBase]: 2345/3732 cut-off events. [2024-06-14 13:28:21,814 INFO L125 PetriNetUnfolderBase]: For 262261/262261 co-relation queries the response was YES. [2024-06-14 13:28:21,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30033 conditions, 3732 events. 2345/3732 cut-off events. For 262261/262261 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 21010 event pairs, 491 based on Foata normal form. 4/3730 useless extension candidates. Maximal degree in co-relation 29922. Up to 3429 conditions per place. [2024-06-14 13:28:21,850 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 248 selfloop transitions, 50 changer transitions 0/303 dead transitions. [2024-06-14 13:28:21,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 303 transitions, 3651 flow [2024-06-14 13:28:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:28:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:28:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 13:28:21,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-14 13:28:21,851 INFO L175 Difference]: Start difference. First operand has 234 places, 273 transitions, 2909 flow. Second operand 9 states and 169 transitions. [2024-06-14 13:28:21,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 303 transitions, 3651 flow [2024-06-14 13:28:22,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 303 transitions, 3506 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-14 13:28:22,119 INFO L231 Difference]: Finished difference. Result has 236 places, 275 transitions, 2935 flow [2024-06-14 13:28:22,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2935, PETRI_PLACES=236, PETRI_TRANSITIONS=275} [2024-06-14 13:28:22,120 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 193 predicate places. [2024-06-14 13:28:22,120 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 275 transitions, 2935 flow [2024-06-14 13:28:22,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:22,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:22,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:22,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 13:28:22,120 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:22,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:22,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1724754461, now seen corresponding path program 10 times [2024-06-14 13:28:22,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:22,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225063453] [2024-06-14 13:28:22,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:22,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:23,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:23,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225063453] [2024-06-14 13:28:23,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225063453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:23,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:23,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:28:23,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065099281] [2024-06-14 13:28:23,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:23,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:28:23,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:23,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:28:23,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:28:23,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:23,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 275 transitions, 2935 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:23,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:23,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:23,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:23,999 INFO L124 PetriNetUnfolderBase]: 2337/3720 cut-off events. [2024-06-14 13:28:23,999 INFO L125 PetriNetUnfolderBase]: For 266185/266185 co-relation queries the response was YES. [2024-06-14 13:28:24,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29872 conditions, 3720 events. 2337/3720 cut-off events. For 266185/266185 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 20881 event pairs, 482 based on Foata normal form. 4/3718 useless extension candidates. Maximal degree in co-relation 29760. Up to 3340 conditions per place. [2024-06-14 13:28:24,041 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 247 selfloop transitions, 56 changer transitions 0/308 dead transitions. [2024-06-14 13:28:24,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 308 transitions, 3739 flow [2024-06-14 13:28:24,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:28:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:28:24,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-14 13:28:24,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:28:24,043 INFO L175 Difference]: Start difference. First operand has 236 places, 275 transitions, 2935 flow. Second operand 9 states and 171 transitions. [2024-06-14 13:28:24,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 308 transitions, 3739 flow [2024-06-14 13:28:24,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 308 transitions, 3588 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-14 13:28:24,303 INFO L231 Difference]: Finished difference. Result has 239 places, 279 transitions, 3031 flow [2024-06-14 13:28:24,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3031, PETRI_PLACES=239, PETRI_TRANSITIONS=279} [2024-06-14 13:28:24,304 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 196 predicate places. [2024-06-14 13:28:24,304 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 279 transitions, 3031 flow [2024-06-14 13:28:24,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:24,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:24,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:24,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 13:28:24,304 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:24,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:24,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1730479913, now seen corresponding path program 6 times [2024-06-14 13:28:24,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:24,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465837067] [2024-06-14 13:28:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:24,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:25,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:25,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465837067] [2024-06-14 13:28:25,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465837067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:25,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:25,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:25,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763183684] [2024-06-14 13:28:25,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:25,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:25,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:25,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:25,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:25,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 279 transitions, 3031 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:25,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:25,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:25,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:26,575 INFO L124 PetriNetUnfolderBase]: 2550/4085 cut-off events. [2024-06-14 13:28:26,575 INFO L125 PetriNetUnfolderBase]: For 334625/334625 co-relation queries the response was YES. [2024-06-14 13:28:26,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34313 conditions, 4085 events. 2550/4085 cut-off events. For 334625/334625 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 23665 event pairs, 541 based on Foata normal form. 12/4091 useless extension candidates. Maximal degree in co-relation 34199. Up to 3345 conditions per place. [2024-06-14 13:28:26,617 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 254 selfloop transitions, 63 changer transitions 0/322 dead transitions. [2024-06-14 13:28:26,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 322 transitions, 4167 flow [2024-06-14 13:28:26,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:26,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-14 13:28:26,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-14 13:28:26,618 INFO L175 Difference]: Start difference. First operand has 239 places, 279 transitions, 3031 flow. Second operand 10 states and 196 transitions. [2024-06-14 13:28:26,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 322 transitions, 4167 flow [2024-06-14 13:28:26,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 322 transitions, 4014 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-14 13:28:26,985 INFO L231 Difference]: Finished difference. Result has 245 places, 282 transitions, 3151 flow [2024-06-14 13:28:26,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2878, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3151, PETRI_PLACES=245, PETRI_TRANSITIONS=282} [2024-06-14 13:28:26,985 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 202 predicate places. [2024-06-14 13:28:26,985 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 282 transitions, 3151 flow [2024-06-14 13:28:26,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:26,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:26,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:26,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 13:28:26,986 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:26,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:26,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1730270663, now seen corresponding path program 7 times [2024-06-14 13:28:26,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:26,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175600899] [2024-06-14 13:28:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:26,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:28,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:28,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175600899] [2024-06-14 13:28:28,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175600899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:28,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:28,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:28,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459635737] [2024-06-14 13:28:28,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:28,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:28,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:28,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:28,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:28,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:28,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 282 transitions, 3151 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:28,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:28,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:28,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:29,386 INFO L124 PetriNetUnfolderBase]: 2608/4183 cut-off events. [2024-06-14 13:28:29,387 INFO L125 PetriNetUnfolderBase]: For 354799/354799 co-relation queries the response was YES. [2024-06-14 13:28:29,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35361 conditions, 4183 events. 2608/4183 cut-off events. For 354799/354799 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24513 event pairs, 571 based on Foata normal form. 16/4193 useless extension candidates. Maximal degree in co-relation 35244. Up to 3787 conditions per place. [2024-06-14 13:28:29,434 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 263 selfloop transitions, 50 changer transitions 0/318 dead transitions. [2024-06-14 13:28:29,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 318 transitions, 3960 flow [2024-06-14 13:28:29,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:29,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:29,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-14 13:28:29,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:28:29,435 INFO L175 Difference]: Start difference. First operand has 245 places, 282 transitions, 3151 flow. Second operand 10 states and 190 transitions. [2024-06-14 13:28:29,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 318 transitions, 3960 flow [2024-06-14 13:28:29,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 318 transitions, 3847 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-14 13:28:29,747 INFO L231 Difference]: Finished difference. Result has 249 places, 283 transitions, 3188 flow [2024-06-14 13:28:29,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3042, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3188, PETRI_PLACES=249, PETRI_TRANSITIONS=283} [2024-06-14 13:28:29,748 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 206 predicate places. [2024-06-14 13:28:29,748 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 283 transitions, 3188 flow [2024-06-14 13:28:29,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:29,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:29,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:29,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 13:28:29,749 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:29,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:29,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1931561723, now seen corresponding path program 8 times [2024-06-14 13:28:29,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:29,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580072140] [2024-06-14 13:28:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:29,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:30,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:30,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580072140] [2024-06-14 13:28:30,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580072140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:30,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:30,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:30,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179935913] [2024-06-14 13:28:30,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:30,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:30,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:30,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:30,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:30,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:30,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 283 transitions, 3188 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:30,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:30,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:30,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:32,076 INFO L124 PetriNetUnfolderBase]: 2580/4135 cut-off events. [2024-06-14 13:28:32,076 INFO L125 PetriNetUnfolderBase]: For 340592/340592 co-relation queries the response was YES. [2024-06-14 13:28:32,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34238 conditions, 4135 events. 2580/4135 cut-off events. For 340592/340592 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 24090 event pairs, 564 based on Foata normal form. 16/4140 useless extension candidates. Maximal degree in co-relation 34119. Up to 3644 conditions per place. [2024-06-14 13:28:32,115 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 238 selfloop transitions, 74 changer transitions 0/317 dead transitions. [2024-06-14 13:28:32,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 317 transitions, 3948 flow [2024-06-14 13:28:32,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:32,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:32,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-14 13:28:32,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-14 13:28:32,116 INFO L175 Difference]: Start difference. First operand has 249 places, 283 transitions, 3188 flow. Second operand 10 states and 192 transitions. [2024-06-14 13:28:32,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 317 transitions, 3948 flow [2024-06-14 13:28:32,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 317 transitions, 3831 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 13:28:32,421 INFO L231 Difference]: Finished difference. Result has 251 places, 283 transitions, 3226 flow [2024-06-14 13:28:32,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3071, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3226, PETRI_PLACES=251, PETRI_TRANSITIONS=283} [2024-06-14 13:28:32,422 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 208 predicate places. [2024-06-14 13:28:32,422 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 283 transitions, 3226 flow [2024-06-14 13:28:32,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:32,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:32,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:32,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 13:28:32,423 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:32,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:32,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1058066827, now seen corresponding path program 9 times [2024-06-14 13:28:32,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:32,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629837316] [2024-06-14 13:28:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:32,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:33,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:33,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629837316] [2024-06-14 13:28:33,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629837316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:33,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:33,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:33,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054415006] [2024-06-14 13:28:33,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:33,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:33,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:33,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:33,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:33,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:33,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 283 transitions, 3226 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:33,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:33,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:33,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:34,580 INFO L124 PetriNetUnfolderBase]: 2804/4515 cut-off events. [2024-06-14 13:28:34,580 INFO L125 PetriNetUnfolderBase]: For 405686/405686 co-relation queries the response was YES. [2024-06-14 13:28:34,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38894 conditions, 4515 events. 2804/4515 cut-off events. For 405686/405686 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 26821 event pairs, 554 based on Foata normal form. 12/4516 useless extension candidates. Maximal degree in co-relation 38774. Up to 2726 conditions per place. [2024-06-14 13:28:34,634 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 198 selfloop transitions, 124 changer transitions 0/327 dead transitions. [2024-06-14 13:28:34,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 327 transitions, 4425 flow [2024-06-14 13:28:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-14 13:28:34,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-14 13:28:34,636 INFO L175 Difference]: Start difference. First operand has 251 places, 283 transitions, 3226 flow. Second operand 10 states and 196 transitions. [2024-06-14 13:28:34,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 327 transitions, 4425 flow [2024-06-14 13:28:35,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 327 transitions, 4264 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 13:28:35,052 INFO L231 Difference]: Finished difference. Result has 254 places, 287 transitions, 3534 flow [2024-06-14 13:28:35,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3065, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3534, PETRI_PLACES=254, PETRI_TRANSITIONS=287} [2024-06-14 13:28:35,052 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 211 predicate places. [2024-06-14 13:28:35,053 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 287 transitions, 3534 flow [2024-06-14 13:28:35,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:35,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:35,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:35,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 13:28:35,053 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:35,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:35,053 INFO L85 PathProgramCache]: Analyzing trace with hash 488789469, now seen corresponding path program 10 times [2024-06-14 13:28:35,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:35,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236095013] [2024-06-14 13:28:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:35,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:36,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:36,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:36,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236095013] [2024-06-14 13:28:36,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236095013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:36,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:36,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:36,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157064333] [2024-06-14 13:28:36,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:36,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:36,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:36,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:36,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:36,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:36,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 287 transitions, 3534 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:36,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:36,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:36,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:37,320 INFO L124 PetriNetUnfolderBase]: 2862/4613 cut-off events. [2024-06-14 13:28:37,321 INFO L125 PetriNetUnfolderBase]: For 430035/430035 co-relation queries the response was YES. [2024-06-14 13:28:37,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40423 conditions, 4613 events. 2862/4613 cut-off events. For 430035/430035 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 27641 event pairs, 660 based on Foata normal form. 16/4618 useless extension candidates. Maximal degree in co-relation 40301. Up to 4131 conditions per place. [2024-06-14 13:28:37,379 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 242 selfloop transitions, 75 changer transitions 0/322 dead transitions. [2024-06-14 13:28:37,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 322 transitions, 4351 flow [2024-06-14 13:28:37,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:37,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-14 13:28:37,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-14 13:28:37,380 INFO L175 Difference]: Start difference. First operand has 254 places, 287 transitions, 3534 flow. Second operand 10 states and 191 transitions. [2024-06-14 13:28:37,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 322 transitions, 4351 flow [2024-06-14 13:28:38,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 322 transitions, 4165 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-14 13:28:38,008 INFO L231 Difference]: Finished difference. Result has 258 places, 288 transitions, 3554 flow [2024-06-14 13:28:38,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3358, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3554, PETRI_PLACES=258, PETRI_TRANSITIONS=288} [2024-06-14 13:28:38,008 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 215 predicate places. [2024-06-14 13:28:38,008 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 288 transitions, 3554 flow [2024-06-14 13:28:38,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:38,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:38,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:38,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 13:28:38,009 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:38,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash -679284425, now seen corresponding path program 11 times [2024-06-14 13:28:38,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:38,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096120105] [2024-06-14 13:28:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:38,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:38,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:38,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096120105] [2024-06-14 13:28:38,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096120105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:38,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:38,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:38,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318469844] [2024-06-14 13:28:38,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:38,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:38,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:38,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:38,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:39,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:39,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 288 transitions, 3554 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:39,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:39,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:39,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:40,301 INFO L124 PetriNetUnfolderBase]: 2903/4694 cut-off events. [2024-06-14 13:28:40,301 INFO L125 PetriNetUnfolderBase]: For 433006/433006 co-relation queries the response was YES. [2024-06-14 13:28:40,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40962 conditions, 4694 events. 2903/4694 cut-off events. For 433006/433006 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 28410 event pairs, 666 based on Foata normal form. 12/4695 useless extension candidates. Maximal degree in co-relation 40838. Up to 3987 conditions per place. [2024-06-14 13:28:40,351 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 245 selfloop transitions, 78 changer transitions 0/328 dead transitions. [2024-06-14 13:28:40,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 328 transitions, 4633 flow [2024-06-14 13:28:40,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-14 13:28:40,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-14 13:28:40,353 INFO L175 Difference]: Start difference. First operand has 258 places, 288 transitions, 3554 flow. Second operand 10 states and 195 transitions. [2024-06-14 13:28:40,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 328 transitions, 4633 flow [2024-06-14 13:28:40,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 328 transitions, 4470 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 13:28:40,840 INFO L231 Difference]: Finished difference. Result has 260 places, 289 transitions, 3594 flow [2024-06-14 13:28:40,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3594, PETRI_PLACES=260, PETRI_TRANSITIONS=289} [2024-06-14 13:28:40,840 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 217 predicate places. [2024-06-14 13:28:40,840 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 289 transitions, 3594 flow [2024-06-14 13:28:40,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:40,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:40,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:40,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 13:28:40,841 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:40,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:40,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1724908283, now seen corresponding path program 12 times [2024-06-14 13:28:40,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:40,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657440327] [2024-06-14 13:28:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:40,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:42,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:42,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657440327] [2024-06-14 13:28:42,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657440327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:42,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:42,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:42,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917072242] [2024-06-14 13:28:42,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:42,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:42,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:42,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:42,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:42,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:42,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 289 transitions, 3594 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:42,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:42,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:42,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:43,257 INFO L124 PetriNetUnfolderBase]: 2875/4654 cut-off events. [2024-06-14 13:28:43,258 INFO L125 PetriNetUnfolderBase]: For 427387/427387 co-relation queries the response was YES. [2024-06-14 13:28:43,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39911 conditions, 4654 events. 2875/4654 cut-off events. For 427387/427387 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 28170 event pairs, 656 based on Foata normal form. 16/4664 useless extension candidates. Maximal degree in co-relation 39786. Up to 4248 conditions per place. [2024-06-14 13:28:43,315 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 268 selfloop transitions, 51 changer transitions 0/324 dead transitions. [2024-06-14 13:28:43,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 324 transitions, 4374 flow [2024-06-14 13:28:43,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:43,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-14 13:28:43,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-14 13:28:43,316 INFO L175 Difference]: Start difference. First operand has 260 places, 289 transitions, 3594 flow. Second operand 10 states and 189 transitions. [2024-06-14 13:28:43,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 324 transitions, 4374 flow [2024-06-14 13:28:43,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 324 transitions, 4201 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 13:28:43,723 INFO L231 Difference]: Finished difference. Result has 263 places, 289 transitions, 3530 flow [2024-06-14 13:28:43,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3421, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3530, PETRI_PLACES=263, PETRI_TRANSITIONS=289} [2024-06-14 13:28:43,724 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 220 predicate places. [2024-06-14 13:28:43,724 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 289 transitions, 3530 flow [2024-06-14 13:28:43,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:43,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:43,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:43,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 13:28:43,724 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:43,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:43,725 INFO L85 PathProgramCache]: Analyzing trace with hash -686902985, now seen corresponding path program 13 times [2024-06-14 13:28:43,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:43,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459422968] [2024-06-14 13:28:43,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:43,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:44,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:44,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459422968] [2024-06-14 13:28:44,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459422968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:44,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:44,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:44,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391994365] [2024-06-14 13:28:44,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:44,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:44,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:44,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:44,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:45,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:45,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 289 transitions, 3530 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:45,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:45,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:45,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:46,176 INFO L124 PetriNetUnfolderBase]: 2847/4610 cut-off events. [2024-06-14 13:28:46,176 INFO L125 PetriNetUnfolderBase]: For 411823/411823 co-relation queries the response was YES. [2024-06-14 13:28:46,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38600 conditions, 4610 events. 2847/4610 cut-off events. For 411823/411823 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 27860 event pairs, 640 based on Foata normal form. 16/4620 useless extension candidates. Maximal degree in co-relation 38474. Up to 4204 conditions per place. [2024-06-14 13:28:46,225 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 267 selfloop transitions, 52 changer transitions 0/324 dead transitions. [2024-06-14 13:28:46,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 324 transitions, 4310 flow [2024-06-14 13:28:46,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:46,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-14 13:28:46,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-14 13:28:46,227 INFO L175 Difference]: Start difference. First operand has 263 places, 289 transitions, 3530 flow. Second operand 10 states and 188 transitions. [2024-06-14 13:28:46,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 324 transitions, 4310 flow [2024-06-14 13:28:46,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 324 transitions, 4171 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 13:28:46,742 INFO L231 Difference]: Finished difference. Result has 265 places, 289 transitions, 3502 flow [2024-06-14 13:28:46,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3391, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3502, PETRI_PLACES=265, PETRI_TRANSITIONS=289} [2024-06-14 13:28:46,742 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-06-14 13:28:46,742 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 289 transitions, 3502 flow [2024-06-14 13:28:46,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:46,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:46,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:46,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 13:28:46,743 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:46,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:46,743 INFO L85 PathProgramCache]: Analyzing trace with hash 462240951, now seen corresponding path program 14 times [2024-06-14 13:28:46,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:46,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99339655] [2024-06-14 13:28:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:46,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:47,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:47,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:47,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99339655] [2024-06-14 13:28:47,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99339655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:47,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:47,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:47,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28433879] [2024-06-14 13:28:47,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:47,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:47,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:47,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:47,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:47,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:47,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 289 transitions, 3502 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:47,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:47,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:47,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:49,103 INFO L124 PetriNetUnfolderBase]: 2888/4677 cut-off events. [2024-06-14 13:28:49,103 INFO L125 PetriNetUnfolderBase]: For 415472/415472 co-relation queries the response was YES. [2024-06-14 13:28:49,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39021 conditions, 4677 events. 2888/4677 cut-off events. For 415472/415472 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 28362 event pairs, 644 based on Foata normal form. 12/4678 useless extension candidates. Maximal degree in co-relation 38894. Up to 3949 conditions per place. [2024-06-14 13:28:49,160 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 215 selfloop transitions, 109 changer transitions 0/329 dead transitions. [2024-06-14 13:28:49,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 329 transitions, 4597 flow [2024-06-14 13:28:49,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:49,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-14 13:28:49,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-14 13:28:49,161 INFO L175 Difference]: Start difference. First operand has 265 places, 289 transitions, 3502 flow. Second operand 10 states and 196 transitions. [2024-06-14 13:28:49,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 329 transitions, 4597 flow [2024-06-14 13:28:49,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 329 transitions, 4469 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 13:28:49,748 INFO L231 Difference]: Finished difference. Result has 265 places, 290 transitions, 3639 flow [2024-06-14 13:28:49,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3374, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3639, PETRI_PLACES=265, PETRI_TRANSITIONS=290} [2024-06-14 13:28:49,748 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-06-14 13:28:49,748 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 290 transitions, 3639 flow [2024-06-14 13:28:49,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:49,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:49,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:49,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 13:28:49,749 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:49,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:49,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1978314771, now seen corresponding path program 15 times [2024-06-14 13:28:49,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:49,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526485739] [2024-06-14 13:28:49,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:49,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:50,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:50,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526485739] [2024-06-14 13:28:50,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526485739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:50,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:50,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:28:50,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266712219] [2024-06-14 13:28:50,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:50,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:28:50,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:50,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:28:50,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:28:50,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:28:50,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 290 transitions, 3639 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:50,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:50,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:28:50,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:52,018 INFO L124 PetriNetUnfolderBase]: 2860/4633 cut-off events. [2024-06-14 13:28:52,019 INFO L125 PetriNetUnfolderBase]: For 409232/409232 co-relation queries the response was YES. [2024-06-14 13:28:52,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38114 conditions, 4633 events. 2860/4633 cut-off events. For 409232/409232 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27988 event pairs, 637 based on Foata normal form. 16/4638 useless extension candidates. Maximal degree in co-relation 37987. Up to 4028 conditions per place. [2024-06-14 13:28:52,098 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 212 selfloop transitions, 107 changer transitions 0/324 dead transitions. [2024-06-14 13:28:52,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 324 transitions, 4413 flow [2024-06-14 13:28:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:28:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:28:52,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-14 13:28:52,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2024-06-14 13:28:52,099 INFO L175 Difference]: Start difference. First operand has 265 places, 290 transitions, 3639 flow. Second operand 10 states and 191 transitions. [2024-06-14 13:28:52,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 324 transitions, 4413 flow [2024-06-14 13:28:52,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 324 transitions, 4103 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 13:28:52,723 INFO L231 Difference]: Finished difference. Result has 266 places, 290 transitions, 3550 flow [2024-06-14 13:28:52,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3329, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3550, PETRI_PLACES=266, PETRI_TRANSITIONS=290} [2024-06-14 13:28:52,724 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 223 predicate places. [2024-06-14 13:28:52,724 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 290 transitions, 3550 flow [2024-06-14 13:28:52,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:52,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:52,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:52,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 13:28:52,724 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:52,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:52,724 INFO L85 PathProgramCache]: Analyzing trace with hash -74979764, now seen corresponding path program 1 times [2024-06-14 13:28:52,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:52,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564265147] [2024-06-14 13:28:52,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:52,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:53,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:53,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:53,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564265147] [2024-06-14 13:28:53,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564265147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:53,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:53,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:28:53,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772463174] [2024-06-14 13:28:53,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:53,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:28:53,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:53,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:28:53,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:28:53,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:28:53,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 290 transitions, 3550 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:53,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:53,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:28:53,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:54,804 INFO L124 PetriNetUnfolderBase]: 2794/4593 cut-off events. [2024-06-14 13:28:54,805 INFO L125 PetriNetUnfolderBase]: For 401868/401882 co-relation queries the response was YES. [2024-06-14 13:28:54,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37747 conditions, 4593 events. 2794/4593 cut-off events. For 401868/401882 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 28345 event pairs, 733 based on Foata normal form. 3/4583 useless extension candidates. Maximal degree in co-relation 37621. Up to 4218 conditions per place. [2024-06-14 13:28:54,871 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 258 selfloop transitions, 42 changer transitions 0/322 dead transitions. [2024-06-14 13:28:54,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 322 transitions, 4442 flow [2024-06-14 13:28:54,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:28:54,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:28:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-14 13:28:54,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-14 13:28:54,872 INFO L175 Difference]: Start difference. First operand has 266 places, 290 transitions, 3550 flow. Second operand 9 states and 175 transitions. [2024-06-14 13:28:54,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 322 transitions, 4442 flow [2024-06-14 13:28:55,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 322 transitions, 4205 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 13:28:55,526 INFO L231 Difference]: Finished difference. Result has 265 places, 296 transitions, 3494 flow [2024-06-14 13:28:55,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3494, PETRI_PLACES=265, PETRI_TRANSITIONS=296} [2024-06-14 13:28:55,526 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-06-14 13:28:55,526 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 296 transitions, 3494 flow [2024-06-14 13:28:55,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:55,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:55,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:55,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 13:28:55,527 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:55,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:55,527 INFO L85 PathProgramCache]: Analyzing trace with hash -71170484, now seen corresponding path program 2 times [2024-06-14 13:28:55,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:55,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201045145] [2024-06-14 13:28:55,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:55,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:56,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:56,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201045145] [2024-06-14 13:28:56,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201045145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:56,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:56,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:28:56,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621131030] [2024-06-14 13:28:56,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:56,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:28:56,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:56,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:28:56,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:28:56,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:28:56,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 296 transitions, 3494 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:56,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:56,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:28:56,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:28:57,544 INFO L124 PetriNetUnfolderBase]: 2795/4598 cut-off events. [2024-06-14 13:28:57,544 INFO L125 PetriNetUnfolderBase]: For 411737/411751 co-relation queries the response was YES. [2024-06-14 13:28:57,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37963 conditions, 4598 events. 2795/4598 cut-off events. For 411737/411751 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 28507 event pairs, 734 based on Foata normal form. 2/4588 useless extension candidates. Maximal degree in co-relation 37837. Up to 4276 conditions per place. [2024-06-14 13:28:57,601 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 265 selfloop transitions, 33 changer transitions 0/320 dead transitions. [2024-06-14 13:28:57,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 320 transitions, 4370 flow [2024-06-14 13:28:57,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:28:57,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:28:57,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-14 13:28:57,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:28:57,602 INFO L175 Difference]: Start difference. First operand has 265 places, 296 transitions, 3494 flow. Second operand 8 states and 152 transitions. [2024-06-14 13:28:57,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 320 transitions, 4370 flow [2024-06-14 13:28:58,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 320 transitions, 4275 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-14 13:28:58,231 INFO L231 Difference]: Finished difference. Result has 269 places, 302 transitions, 3594 flow [2024-06-14 13:28:58,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3407, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3594, PETRI_PLACES=269, PETRI_TRANSITIONS=302} [2024-06-14 13:28:58,231 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 226 predicate places. [2024-06-14 13:28:58,231 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 302 transitions, 3594 flow [2024-06-14 13:28:58,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:58,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:28:58,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:28:58,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 13:28:58,232 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:28:58,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:28:58,232 INFO L85 PathProgramCache]: Analyzing trace with hash -730172946, now seen corresponding path program 3 times [2024-06-14 13:28:58,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:28:58,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182328150] [2024-06-14 13:28:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:28:58,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:28:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:28:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:28:58,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:28:58,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182328150] [2024-06-14 13:28:58,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182328150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:28:58,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:28:58,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:28:58,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469309585] [2024-06-14 13:28:58,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:28:58,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:28:58,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:28:58,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:28:58,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:28:59,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:28:59,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 302 transitions, 3594 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:28:59,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:28:59,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:28:59,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:00,049 INFO L124 PetriNetUnfolderBase]: 2793/4595 cut-off events. [2024-06-14 13:29:00,050 INFO L125 PetriNetUnfolderBase]: For 416541/416543 co-relation queries the response was YES. [2024-06-14 13:29:00,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38059 conditions, 4595 events. 2793/4595 cut-off events. For 416541/416543 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 28455 event pairs, 734 based on Foata normal form. 4/4587 useless extension candidates. Maximal degree in co-relation 37930. Up to 4249 conditions per place. [2024-06-14 13:29:00,112 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 269 selfloop transitions, 40 changer transitions 0/331 dead transitions. [2024-06-14 13:29:00,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 331 transitions, 4660 flow [2024-06-14 13:29:00,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:29:00,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:29:00,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-14 13:29:00,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931972789115646 [2024-06-14 13:29:00,113 INFO L175 Difference]: Start difference. First operand has 269 places, 302 transitions, 3594 flow. Second operand 7 states and 145 transitions. [2024-06-14 13:29:00,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 331 transitions, 4660 flow [2024-06-14 13:29:00,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 331 transitions, 4561 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-14 13:29:00,756 INFO L231 Difference]: Finished difference. Result has 272 places, 308 transitions, 3724 flow [2024-06-14 13:29:00,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3495, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3724, PETRI_PLACES=272, PETRI_TRANSITIONS=308} [2024-06-14 13:29:00,757 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 229 predicate places. [2024-06-14 13:29:00,757 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 308 transitions, 3724 flow [2024-06-14 13:29:00,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:00,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:00,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:00,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 13:29:00,757 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:00,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:00,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1014653934, now seen corresponding path program 1 times [2024-06-14 13:29:00,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:00,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507366692] [2024-06-14 13:29:00,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:00,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:01,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:01,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507366692] [2024-06-14 13:29:01,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507366692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:01,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:01,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:29:01,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928550425] [2024-06-14 13:29:01,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:01,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:29:01,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:01,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:29:01,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:29:01,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:01,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 308 transitions, 3724 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:01,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:01,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:01,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:02,457 INFO L124 PetriNetUnfolderBase]: 2885/4686 cut-off events. [2024-06-14 13:29:02,457 INFO L125 PetriNetUnfolderBase]: For 415958/415958 co-relation queries the response was YES. [2024-06-14 13:29:02,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38983 conditions, 4686 events. 2885/4686 cut-off events. For 415958/415958 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 28547 event pairs, 788 based on Foata normal form. 1/4685 useless extension candidates. Maximal degree in co-relation 38852. Up to 4478 conditions per place. [2024-06-14 13:29:02,512 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 288 selfloop transitions, 26 changer transitions 0/319 dead transitions. [2024-06-14 13:29:02,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 319 transitions, 4386 flow [2024-06-14 13:29:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:29:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:29:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-06-14 13:29:02,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-06-14 13:29:02,513 INFO L175 Difference]: Start difference. First operand has 272 places, 308 transitions, 3724 flow. Second operand 5 states and 101 transitions. [2024-06-14 13:29:02,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 319 transitions, 4386 flow [2024-06-14 13:29:03,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 319 transitions, 4285 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-14 13:29:03,216 INFO L231 Difference]: Finished difference. Result has 274 places, 308 transitions, 3696 flow [2024-06-14 13:29:03,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3623, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3696, PETRI_PLACES=274, PETRI_TRANSITIONS=308} [2024-06-14 13:29:03,217 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 231 predicate places. [2024-06-14 13:29:03,217 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 308 transitions, 3696 flow [2024-06-14 13:29:03,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:03,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:03,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:03,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 13:29:03,218 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:03,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:03,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1745758595, now seen corresponding path program 1 times [2024-06-14 13:29:03,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:03,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509781689] [2024-06-14 13:29:03,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:03,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:04,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:04,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509781689] [2024-06-14 13:29:04,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509781689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:04,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:04,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:29:04,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286816511] [2024-06-14 13:29:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:04,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:29:04,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:04,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:29:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:29:04,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:04,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 308 transitions, 3696 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:04,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:04,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:04,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:05,740 INFO L124 PetriNetUnfolderBase]: 2926/4757 cut-off events. [2024-06-14 13:29:05,740 INFO L125 PetriNetUnfolderBase]: For 447626/447626 co-relation queries the response was YES. [2024-06-14 13:29:05,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39564 conditions, 4757 events. 2926/4757 cut-off events. For 447626/447626 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 29106 event pairs, 631 based on Foata normal form. 12/4767 useless extension candidates. Maximal degree in co-relation 39431. Up to 4433 conditions per place. [2024-06-14 13:29:05,800 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 312 selfloop transitions, 29 changer transitions 0/346 dead transitions. [2024-06-14 13:29:05,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 346 transitions, 4538 flow [2024-06-14 13:29:05,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:29:05,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:29:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-14 13:29:05,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2024-06-14 13:29:05,801 INFO L175 Difference]: Start difference. First operand has 274 places, 308 transitions, 3696 flow. Second operand 10 states and 187 transitions. [2024-06-14 13:29:05,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 346 transitions, 4538 flow [2024-06-14 13:29:06,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 346 transitions, 4486 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 13:29:06,489 INFO L231 Difference]: Finished difference. Result has 280 places, 309 transitions, 3742 flow [2024-06-14 13:29:06,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3742, PETRI_PLACES=280, PETRI_TRANSITIONS=309} [2024-06-14 13:29:06,489 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-06-14 13:29:06,490 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 309 transitions, 3742 flow [2024-06-14 13:29:06,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:06,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:06,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:06,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 13:29:06,490 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:06,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:06,490 INFO L85 PathProgramCache]: Analyzing trace with hash -303957505, now seen corresponding path program 2 times [2024-06-14 13:29:06,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:06,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155970486] [2024-06-14 13:29:06,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:06,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:07,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:07,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155970486] [2024-06-14 13:29:07,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155970486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:07,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:07,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:29:07,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690380592] [2024-06-14 13:29:07,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:07,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:29:07,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:07,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:29:07,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:29:07,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:07,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 309 transitions, 3742 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:07,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:07,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:07,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:09,104 INFO L124 PetriNetUnfolderBase]: 2967/4826 cut-off events. [2024-06-14 13:29:09,104 INFO L125 PetriNetUnfolderBase]: For 463289/463289 co-relation queries the response was YES. [2024-06-14 13:29:09,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40333 conditions, 4826 events. 2967/4826 cut-off events. For 463289/463289 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 29666 event pairs, 633 based on Foata normal form. 12/4836 useless extension candidates. Maximal degree in co-relation 40199. Up to 4171 conditions per place. [2024-06-14 13:29:09,165 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 291 selfloop transitions, 58 changer transitions 0/354 dead transitions. [2024-06-14 13:29:09,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 354 transitions, 4670 flow [2024-06-14 13:29:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:29:09,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:29:09,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-14 13:29:09,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-14 13:29:09,167 INFO L175 Difference]: Start difference. First operand has 280 places, 309 transitions, 3742 flow. Second operand 11 states and 210 transitions. [2024-06-14 13:29:09,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 354 transitions, 4670 flow [2024-06-14 13:29:09,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 354 transitions, 4596 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 13:29:09,969 INFO L231 Difference]: Finished difference. Result has 283 places, 310 transitions, 3838 flow [2024-06-14 13:29:09,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3668, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3838, PETRI_PLACES=283, PETRI_TRANSITIONS=310} [2024-06-14 13:29:09,970 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 240 predicate places. [2024-06-14 13:29:09,970 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 310 transitions, 3838 flow [2024-06-14 13:29:09,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:09,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:09,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:09,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 13:29:09,971 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:09,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:09,971 INFO L85 PathProgramCache]: Analyzing trace with hash 174335699, now seen corresponding path program 3 times [2024-06-14 13:29:09,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:09,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165264347] [2024-06-14 13:29:09,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:09,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:11,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:11,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:11,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165264347] [2024-06-14 13:29:11,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165264347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:11,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:11,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:29:11,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509313920] [2024-06-14 13:29:11,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:11,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:29:11,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:11,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:29:11,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:29:11,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:11,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 310 transitions, 3838 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:11,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:11,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:11,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:12,386 INFO L124 PetriNetUnfolderBase]: 2947/4796 cut-off events. [2024-06-14 13:29:12,387 INFO L125 PetriNetUnfolderBase]: For 450336/450336 co-relation queries the response was YES. [2024-06-14 13:29:12,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39623 conditions, 4796 events. 2947/4796 cut-off events. For 450336/450336 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 29458 event pairs, 632 based on Foata normal form. 12/4806 useless extension candidates. Maximal degree in co-relation 39488. Up to 4472 conditions per place. [2024-06-14 13:29:12,548 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 313 selfloop transitions, 29 changer transitions 0/347 dead transitions. [2024-06-14 13:29:12,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 347 transitions, 4650 flow [2024-06-14 13:29:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:29:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:29:12,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-14 13:29:12,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2024-06-14 13:29:12,549 INFO L175 Difference]: Start difference. First operand has 283 places, 310 transitions, 3838 flow. Second operand 10 states and 187 transitions. [2024-06-14 13:29:12,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 347 transitions, 4650 flow [2024-06-14 13:29:13,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 347 transitions, 4500 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 13:29:13,202 INFO L231 Difference]: Finished difference. Result has 284 places, 310 transitions, 3752 flow [2024-06-14 13:29:13,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3752, PETRI_PLACES=284, PETRI_TRANSITIONS=310} [2024-06-14 13:29:13,202 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 241 predicate places. [2024-06-14 13:29:13,202 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 310 transitions, 3752 flow [2024-06-14 13:29:13,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:13,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:13,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:13,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 13:29:13,203 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:13,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:13,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1854388735, now seen corresponding path program 4 times [2024-06-14 13:29:13,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:13,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712426711] [2024-06-14 13:29:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:13,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:14,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:14,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712426711] [2024-06-14 13:29:14,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712426711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:14,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:14,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:29:14,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056788003] [2024-06-14 13:29:14,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:14,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:29:14,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:14,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:29:14,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:29:14,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:14,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 310 transitions, 3752 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:14,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:14,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:14,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:15,559 INFO L124 PetriNetUnfolderBase]: 2988/4867 cut-off events. [2024-06-14 13:29:15,559 INFO L125 PetriNetUnfolderBase]: For 462975/462975 co-relation queries the response was YES. [2024-06-14 13:29:15,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39959 conditions, 4867 events. 2988/4867 cut-off events. For 462975/462975 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 29932 event pairs, 542 based on Foata normal form. 12/4877 useless extension candidates. Maximal degree in co-relation 39823. Up to 4492 conditions per place. [2024-06-14 13:29:15,614 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 319 selfloop transitions, 28 changer transitions 0/352 dead transitions. [2024-06-14 13:29:15,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 352 transitions, 4632 flow [2024-06-14 13:29:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:29:15,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:29:15,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-14 13:29:15,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-14 13:29:15,615 INFO L175 Difference]: Start difference. First operand has 284 places, 310 transitions, 3752 flow. Second operand 10 states and 188 transitions. [2024-06-14 13:29:15,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 352 transitions, 4632 flow [2024-06-14 13:29:16,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 352 transitions, 4544 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 13:29:16,402 INFO L231 Difference]: Finished difference. Result has 285 places, 311 transitions, 3776 flow [2024-06-14 13:29:16,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3664, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3776, PETRI_PLACES=285, PETRI_TRANSITIONS=311} [2024-06-14 13:29:16,402 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 242 predicate places. [2024-06-14 13:29:16,403 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 311 transitions, 3776 flow [2024-06-14 13:29:16,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:16,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:16,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:16,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 13:29:16,403 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:16,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:16,403 INFO L85 PathProgramCache]: Analyzing trace with hash 304959999, now seen corresponding path program 5 times [2024-06-14 13:29:16,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:16,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579467706] [2024-06-14 13:29:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:16,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:17,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:17,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579467706] [2024-06-14 13:29:17,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579467706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:17,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:17,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:29:17,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633909195] [2024-06-14 13:29:17,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:17,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:29:17,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:17,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:29:17,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:29:17,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:17,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 311 transitions, 3776 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:17,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:17,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:17,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:18,998 INFO L124 PetriNetUnfolderBase]: 3029/4938 cut-off events. [2024-06-14 13:29:18,998 INFO L125 PetriNetUnfolderBase]: For 479828/479828 co-relation queries the response was YES. [2024-06-14 13:29:19,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40584 conditions, 4938 events. 3029/4938 cut-off events. For 479828/479828 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 30598 event pairs, 634 based on Foata normal form. 12/4948 useless extension candidates. Maximal degree in co-relation 40447. Up to 4541 conditions per place. [2024-06-14 13:29:19,062 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 309 selfloop transitions, 38 changer transitions 0/352 dead transitions. [2024-06-14 13:29:19,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 352 transitions, 4656 flow [2024-06-14 13:29:19,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:29:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:29:19,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-14 13:29:19,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:29:19,063 INFO L175 Difference]: Start difference. First operand has 285 places, 311 transitions, 3776 flow. Second operand 10 states and 190 transitions. [2024-06-14 13:29:19,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 352 transitions, 4656 flow [2024-06-14 13:29:19,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 352 transitions, 4570 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 13:29:19,947 INFO L231 Difference]: Finished difference. Result has 287 places, 312 transitions, 3824 flow [2024-06-14 13:29:19,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3824, PETRI_PLACES=287, PETRI_TRANSITIONS=312} [2024-06-14 13:29:19,947 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 244 predicate places. [2024-06-14 13:29:19,947 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 312 transitions, 3824 flow [2024-06-14 13:29:19,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:19,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:19,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:19,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 13:29:19,948 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:19,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:19,948 INFO L85 PathProgramCache]: Analyzing trace with hash 309543969, now seen corresponding path program 6 times [2024-06-14 13:29:19,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:19,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593054719] [2024-06-14 13:29:19,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:19,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:21,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:21,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593054719] [2024-06-14 13:29:21,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593054719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:21,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:21,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:29:21,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516524797] [2024-06-14 13:29:21,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:21,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:29:21,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:21,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:29:21,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:29:21,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:21,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 312 transitions, 3824 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:21,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:21,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:21,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:22,612 INFO L124 PetriNetUnfolderBase]: 3070/5009 cut-off events. [2024-06-14 13:29:22,612 INFO L125 PetriNetUnfolderBase]: For 491850/491850 co-relation queries the response was YES. [2024-06-14 13:29:22,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41182 conditions, 5009 events. 3070/5009 cut-off events. For 491850/491850 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 31039 event pairs, 669 based on Foata normal form. 12/5019 useless extension candidates. Maximal degree in co-relation 41044. Up to 4658 conditions per place. [2024-06-14 13:29:22,681 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 311 selfloop transitions, 36 changer transitions 0/352 dead transitions. [2024-06-14 13:29:22,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 352 transitions, 4704 flow [2024-06-14 13:29:22,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:29:22,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:29:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-14 13:29:22,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-14 13:29:22,682 INFO L175 Difference]: Start difference. First operand has 287 places, 312 transitions, 3824 flow. Second operand 10 states and 188 transitions. [2024-06-14 13:29:22,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 352 transitions, 4704 flow [2024-06-14 13:29:23,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 352 transitions, 4596 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 13:29:23,782 INFO L231 Difference]: Finished difference. Result has 289 places, 313 transitions, 3848 flow [2024-06-14 13:29:23,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3716, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3848, PETRI_PLACES=289, PETRI_TRANSITIONS=313} [2024-06-14 13:29:23,783 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 246 predicate places. [2024-06-14 13:29:23,783 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 313 transitions, 3848 flow [2024-06-14 13:29:23,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:23,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:23,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:23,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 13:29:23,784 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:23,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:23,785 INFO L85 PathProgramCache]: Analyzing trace with hash 679041157, now seen corresponding path program 1 times [2024-06-14 13:29:23,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:23,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863434050] [2024-06-14 13:29:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:23,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:24,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:24,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863434050] [2024-06-14 13:29:24,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863434050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:24,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:24,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:29:24,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900072622] [2024-06-14 13:29:24,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:24,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:29:24,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:24,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:29:24,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:29:24,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:24,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 313 transitions, 3848 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:24,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:24,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:24,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:25,528 INFO L124 PetriNetUnfolderBase]: 3096/5045 cut-off events. [2024-06-14 13:29:25,528 INFO L125 PetriNetUnfolderBase]: For 486239/486239 co-relation queries the response was YES. [2024-06-14 13:29:25,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41707 conditions, 5045 events. 3096/5045 cut-off events. For 486239/486239 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 31329 event pairs, 686 based on Foata normal form. 2/5045 useless extension candidates. Maximal degree in co-relation 41568. Up to 4764 conditions per place. [2024-06-14 13:29:25,594 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 300 selfloop transitions, 39 changer transitions 0/344 dead transitions. [2024-06-14 13:29:25,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 344 transitions, 4928 flow [2024-06-14 13:29:25,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:29:25,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:29:25,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-14 13:29:25,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-14 13:29:25,597 INFO L175 Difference]: Start difference. First operand has 289 places, 313 transitions, 3848 flow. Second operand 8 states and 154 transitions. [2024-06-14 13:29:25,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 344 transitions, 4928 flow [2024-06-14 13:29:26,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 344 transitions, 4822 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 13:29:26,537 INFO L231 Difference]: Finished difference. Result has 289 places, 319 transitions, 3986 flow [2024-06-14 13:29:26,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3742, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3986, PETRI_PLACES=289, PETRI_TRANSITIONS=319} [2024-06-14 13:29:26,538 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 246 predicate places. [2024-06-14 13:29:26,538 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 319 transitions, 3986 flow [2024-06-14 13:29:26,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:26,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:26,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:26,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 13:29:26,538 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:26,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:26,539 INFO L85 PathProgramCache]: Analyzing trace with hash 679161127, now seen corresponding path program 2 times [2024-06-14 13:29:26,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:26,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258247947] [2024-06-14 13:29:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:26,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:27,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258247947] [2024-06-14 13:29:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258247947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:27,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:27,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:29:27,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435465774] [2024-06-14 13:29:27,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:27,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:29:27,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:27,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:29:27,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:29:27,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:27,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 319 transitions, 3986 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:27,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:27,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:27,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:28,565 INFO L124 PetriNetUnfolderBase]: 3116/5077 cut-off events. [2024-06-14 13:29:28,565 INFO L125 PetriNetUnfolderBase]: For 498329/498329 co-relation queries the response was YES. [2024-06-14 13:29:28,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42253 conditions, 5077 events. 3116/5077 cut-off events. For 498329/498329 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 31608 event pairs, 687 based on Foata normal form. 2/5077 useless extension candidates. Maximal degree in co-relation 42113. Up to 4828 conditions per place. [2024-06-14 13:29:28,629 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 308 selfloop transitions, 35 changer transitions 0/348 dead transitions. [2024-06-14 13:29:28,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 348 transitions, 4890 flow [2024-06-14 13:29:28,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:29:28,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:29:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-14 13:29:28,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2024-06-14 13:29:28,630 INFO L175 Difference]: Start difference. First operand has 289 places, 319 transitions, 3986 flow. Second operand 8 states and 149 transitions. [2024-06-14 13:29:28,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 348 transitions, 4890 flow [2024-06-14 13:29:29,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 348 transitions, 4759 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-14 13:29:29,676 INFO L231 Difference]: Finished difference. Result has 293 places, 327 transitions, 4075 flow [2024-06-14 13:29:29,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3872, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4075, PETRI_PLACES=293, PETRI_TRANSITIONS=327} [2024-06-14 13:29:29,677 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 250 predicate places. [2024-06-14 13:29:29,677 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 327 transitions, 4075 flow [2024-06-14 13:29:29,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:29,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:29,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:29,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 13:29:29,677 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:29,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:29,678 INFO L85 PathProgramCache]: Analyzing trace with hash 619572255, now seen corresponding path program 1 times [2024-06-14 13:29:29,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:29,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031804000] [2024-06-14 13:29:29,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:29,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:30,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:30,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031804000] [2024-06-14 13:29:30,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031804000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:30,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:30,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:29:30,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619297011] [2024-06-14 13:29:30,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:30,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:29:30,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:30,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:29:30,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:29:30,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:30,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 327 transitions, 4075 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:30,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:30,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:30,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:31,506 INFO L124 PetriNetUnfolderBase]: 3168/5151 cut-off events. [2024-06-14 13:29:31,507 INFO L125 PetriNetUnfolderBase]: For 527698/527698 co-relation queries the response was YES. [2024-06-14 13:29:31,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43244 conditions, 5151 events. 3168/5151 cut-off events. For 527698/527698 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 32047 event pairs, 690 based on Foata normal form. 4/5153 useless extension candidates. Maximal degree in co-relation 43102. Up to 4850 conditions per place. [2024-06-14 13:29:31,579 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 317 selfloop transitions, 41 changer transitions 0/363 dead transitions. [2024-06-14 13:29:31,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 363 transitions, 5218 flow [2024-06-14 13:29:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:29:31,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:29:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-14 13:29:31,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-06-14 13:29:31,581 INFO L175 Difference]: Start difference. First operand has 293 places, 327 transitions, 4075 flow. Second operand 8 states and 155 transitions. [2024-06-14 13:29:31,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 363 transitions, 5218 flow [2024-06-14 13:29:32,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 363 transitions, 5110 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-14 13:29:32,612 INFO L231 Difference]: Finished difference. Result has 298 places, 338 transitions, 4256 flow [2024-06-14 13:29:32,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4256, PETRI_PLACES=298, PETRI_TRANSITIONS=338} [2024-06-14 13:29:32,612 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 255 predicate places. [2024-06-14 13:29:32,612 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 338 transitions, 4256 flow [2024-06-14 13:29:32,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:32,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:32,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:32,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 13:29:32,613 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:32,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:32,613 INFO L85 PathProgramCache]: Analyzing trace with hash 796703589, now seen corresponding path program 3 times [2024-06-14 13:29:32,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:32,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20429766] [2024-06-14 13:29:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:32,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:33,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:33,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20429766] [2024-06-14 13:29:33,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20429766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:33,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:33,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:29:33,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328761634] [2024-06-14 13:29:33,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:33,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:29:33,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:33,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:29:33,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:29:33,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:33,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 338 transitions, 4256 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:33,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:33,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:33,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:34,462 INFO L124 PetriNetUnfolderBase]: 3188/5187 cut-off events. [2024-06-14 13:29:34,462 INFO L125 PetriNetUnfolderBase]: For 537967/537967 co-relation queries the response was YES. [2024-06-14 13:29:34,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44262 conditions, 5187 events. 3188/5187 cut-off events. For 537967/537967 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 32415 event pairs, 688 based on Foata normal form. 2/5187 useless extension candidates. Maximal degree in co-relation 44118. Up to 4961 conditions per place. [2024-06-14 13:29:34,534 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 332 selfloop transitions, 28 changer transitions 0/365 dead transitions. [2024-06-14 13:29:34,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 365 transitions, 5198 flow [2024-06-14 13:29:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:29:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:29:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-14 13:29:34,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 13:29:34,535 INFO L175 Difference]: Start difference. First operand has 298 places, 338 transitions, 4256 flow. Second operand 8 states and 144 transitions. [2024-06-14 13:29:34,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 365 transitions, 5198 flow [2024-06-14 13:29:35,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 365 transitions, 5093 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-14 13:29:35,494 INFO L231 Difference]: Finished difference. Result has 304 places, 347 transitions, 4387 flow [2024-06-14 13:29:35,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4153, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4387, PETRI_PLACES=304, PETRI_TRANSITIONS=347} [2024-06-14 13:29:35,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-14 13:29:35,494 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 347 transitions, 4387 flow [2024-06-14 13:29:35,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:35,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:35,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:35,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 13:29:35,494 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:35,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:35,495 INFO L85 PathProgramCache]: Analyzing trace with hash 796703775, now seen corresponding path program 2 times [2024-06-14 13:29:35,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:35,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675282540] [2024-06-14 13:29:35,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:35,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:36,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:36,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:36,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675282540] [2024-06-14 13:29:36,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675282540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:36,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:36,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:29:36,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713814435] [2024-06-14 13:29:36,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:36,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:29:36,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:36,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:29:36,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:29:36,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:36,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 347 transitions, 4387 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:36,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:36,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:36,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:37,397 INFO L124 PetriNetUnfolderBase]: 3240/5265 cut-off events. [2024-06-14 13:29:37,397 INFO L125 PetriNetUnfolderBase]: For 565721/565721 co-relation queries the response was YES. [2024-06-14 13:29:37,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45087 conditions, 5265 events. 3240/5265 cut-off events. For 565721/565721 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 32878 event pairs, 695 based on Foata normal form. 4/5267 useless extension candidates. Maximal degree in co-relation 44940. Up to 4991 conditions per place. [2024-06-14 13:29:37,468 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 334 selfloop transitions, 38 changer transitions 0/377 dead transitions. [2024-06-14 13:29:37,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 377 transitions, 5514 flow [2024-06-14 13:29:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:29:37,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:29:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-14 13:29:37,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-14 13:29:37,469 INFO L175 Difference]: Start difference. First operand has 304 places, 347 transitions, 4387 flow. Second operand 8 states and 151 transitions. [2024-06-14 13:29:37,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 377 transitions, 5514 flow [2024-06-14 13:29:38,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 377 transitions, 5397 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-14 13:29:38,788 INFO L231 Difference]: Finished difference. Result has 308 places, 355 transitions, 4485 flow [2024-06-14 13:29:38,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4270, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4485, PETRI_PLACES=308, PETRI_TRANSITIONS=355} [2024-06-14 13:29:38,788 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 265 predicate places. [2024-06-14 13:29:38,788 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 355 transitions, 4485 flow [2024-06-14 13:29:38,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:38,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:38,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:38,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 13:29:38,789 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:38,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:38,789 INFO L85 PathProgramCache]: Analyzing trace with hash 856529983, now seen corresponding path program 3 times [2024-06-14 13:29:38,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:38,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668924137] [2024-06-14 13:29:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:38,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:39,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:39,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668924137] [2024-06-14 13:29:39,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668924137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:39,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:39,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:29:39,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921700465] [2024-06-14 13:29:39,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:39,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:29:39,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:39,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:29:39,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:29:39,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:39,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 355 transitions, 4485 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:39,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:39,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:39,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:40,607 INFO L124 PetriNetUnfolderBase]: 3228/5245 cut-off events. [2024-06-14 13:29:40,607 INFO L125 PetriNetUnfolderBase]: For 564903/564903 co-relation queries the response was YES. [2024-06-14 13:29:40,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44777 conditions, 5245 events. 3228/5245 cut-off events. For 564903/564903 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 32709 event pairs, 691 based on Foata normal form. 4/5247 useless extension candidates. Maximal degree in co-relation 44629. Up to 5005 conditions per place. [2024-06-14 13:29:40,678 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 337 selfloop transitions, 31 changer transitions 0/373 dead transitions. [2024-06-14 13:29:40,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 373 transitions, 5291 flow [2024-06-14 13:29:40,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:29:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:29:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-14 13:29:40,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-14 13:29:40,679 INFO L175 Difference]: Start difference. First operand has 308 places, 355 transitions, 4485 flow. Second operand 8 states and 146 transitions. [2024-06-14 13:29:40,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 373 transitions, 5291 flow [2024-06-14 13:29:41,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 373 transitions, 5178 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-14 13:29:41,878 INFO L231 Difference]: Finished difference. Result has 313 places, 355 transitions, 4440 flow [2024-06-14 13:29:41,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4372, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4440, PETRI_PLACES=313, PETRI_TRANSITIONS=355} [2024-06-14 13:29:41,878 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 270 predicate places. [2024-06-14 13:29:41,878 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 355 transitions, 4440 flow [2024-06-14 13:29:41,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:41,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:41,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:41,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 13:29:41,879 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:41,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:41,879 INFO L85 PathProgramCache]: Analyzing trace with hash 856538911, now seen corresponding path program 1 times [2024-06-14 13:29:41,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:41,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966376260] [2024-06-14 13:29:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:41,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:42,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:42,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:42,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966376260] [2024-06-14 13:29:42,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966376260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:42,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:42,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:29:42,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349674292] [2024-06-14 13:29:42,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:42,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:29:42,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:42,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:29:42,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:29:42,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:42,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 355 transitions, 4440 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:42,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:42,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:42,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:44,082 INFO L124 PetriNetUnfolderBase]: 3272/5313 cut-off events. [2024-06-14 13:29:44,082 INFO L125 PetriNetUnfolderBase]: For 601139/601139 co-relation queries the response was YES. [2024-06-14 13:29:44,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45181 conditions, 5313 events. 3272/5313 cut-off events. For 601139/601139 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 33179 event pairs, 700 based on Foata normal form. 12/5323 useless extension candidates. Maximal degree in co-relation 45031. Up to 4950 conditions per place. [2024-06-14 13:29:44,155 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 331 selfloop transitions, 45 changer transitions 0/381 dead transitions. [2024-06-14 13:29:44,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 381 transitions, 5364 flow [2024-06-14 13:29:44,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:29:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:29:44,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-14 13:29:44,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-14 13:29:44,156 INFO L175 Difference]: Start difference. First operand has 313 places, 355 transitions, 4440 flow. Second operand 8 states and 154 transitions. [2024-06-14 13:29:44,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 381 transitions, 5364 flow [2024-06-14 13:29:45,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 381 transitions, 5285 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 13:29:45,396 INFO L231 Difference]: Finished difference. Result has 314 places, 356 transitions, 4470 flow [2024-06-14 13:29:45,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4361, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4470, PETRI_PLACES=314, PETRI_TRANSITIONS=356} [2024-06-14 13:29:45,397 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 271 predicate places. [2024-06-14 13:29:45,397 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 356 transitions, 4470 flow [2024-06-14 13:29:45,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:45,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:45,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:45,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 13:29:45,398 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:45,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:45,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2033835539, now seen corresponding path program 7 times [2024-06-14 13:29:45,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:45,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954266721] [2024-06-14 13:29:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:45,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:46,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:46,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954266721] [2024-06-14 13:29:46,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954266721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:46,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:46,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:29:46,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793118228] [2024-06-14 13:29:46,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:46,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:29:46,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:46,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:29:46,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:29:46,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:46,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 356 transitions, 4470 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:46,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:46,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:46,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:47,937 INFO L124 PetriNetUnfolderBase]: 3252/5282 cut-off events. [2024-06-14 13:29:47,937 INFO L125 PetriNetUnfolderBase]: For 576058/576058 co-relation queries the response was YES. [2024-06-14 13:29:47,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44355 conditions, 5282 events. 3252/5282 cut-off events. For 576058/576058 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 33030 event pairs, 679 based on Foata normal form. 12/5288 useless extension candidates. Maximal degree in co-relation 44204. Up to 4860 conditions per place. [2024-06-14 13:29:48,009 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 335 selfloop transitions, 51 changer transitions 0/391 dead transitions. [2024-06-14 13:29:48,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 391 transitions, 5364 flow [2024-06-14 13:29:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:29:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:29:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-14 13:29:48,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2024-06-14 13:29:48,011 INFO L175 Difference]: Start difference. First operand has 314 places, 356 transitions, 4470 flow. Second operand 10 states and 187 transitions. [2024-06-14 13:29:48,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 391 transitions, 5364 flow [2024-06-14 13:29:49,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 391 transitions, 5273 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 13:29:49,437 INFO L231 Difference]: Finished difference. Result has 318 places, 356 transitions, 4487 flow [2024-06-14 13:29:49,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4379, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4487, PETRI_PLACES=318, PETRI_TRANSITIONS=356} [2024-06-14 13:29:49,438 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 275 predicate places. [2024-06-14 13:29:49,438 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 356 transitions, 4487 flow [2024-06-14 13:29:49,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:49,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:49,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:49,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 13:29:49,439 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:49,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:49,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1601257931, now seen corresponding path program 8 times [2024-06-14 13:29:49,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:49,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912647271] [2024-06-14 13:29:49,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:49,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:50,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:50,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912647271] [2024-06-14 13:29:50,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912647271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:50,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:50,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:29:50,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338170413] [2024-06-14 13:29:50,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:50,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:29:50,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:50,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:29:50,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:29:50,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:50,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 356 transitions, 4487 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:50,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:50,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:50,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:52,007 INFO L124 PetriNetUnfolderBase]: 3293/5351 cut-off events. [2024-06-14 13:29:52,007 INFO L125 PetriNetUnfolderBase]: For 591291/591291 co-relation queries the response was YES. [2024-06-14 13:29:52,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45005 conditions, 5351 events. 3293/5351 cut-off events. For 591291/591291 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 33552 event pairs, 688 based on Foata normal form. 12/5357 useless extension candidates. Maximal degree in co-relation 44853. Up to 4931 conditions per place. [2024-06-14 13:29:52,084 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 338 selfloop transitions, 49 changer transitions 0/392 dead transitions. [2024-06-14 13:29:52,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 392 transitions, 5424 flow [2024-06-14 13:29:52,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:29:52,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:29:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-14 13:29:52,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-14 13:29:52,085 INFO L175 Difference]: Start difference. First operand has 318 places, 356 transitions, 4487 flow. Second operand 10 states and 189 transitions. [2024-06-14 13:29:52,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 392 transitions, 5424 flow [2024-06-14 13:29:53,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 392 transitions, 5258 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-14 13:29:53,345 INFO L231 Difference]: Finished difference. Result has 318 places, 357 transitions, 4468 flow [2024-06-14 13:29:53,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4322, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4468, PETRI_PLACES=318, PETRI_TRANSITIONS=357} [2024-06-14 13:29:53,345 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 275 predicate places. [2024-06-14 13:29:53,345 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 357 transitions, 4468 flow [2024-06-14 13:29:53,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:53,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:53,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:53,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 13:29:53,346 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:53,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:53,346 INFO L85 PathProgramCache]: Analyzing trace with hash -282130263, now seen corresponding path program 9 times [2024-06-14 13:29:53,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:53,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009705498] [2024-06-14 13:29:53,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:53,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:54,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:54,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009705498] [2024-06-14 13:29:54,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009705498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:54,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:54,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:29:54,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222278517] [2024-06-14 13:29:54,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:54,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:29:54,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:54,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:29:54,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:29:54,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:54,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 357 transitions, 4468 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:54,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:54,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:54,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:29:56,137 INFO L124 PetriNetUnfolderBase]: 3273/5319 cut-off events. [2024-06-14 13:29:56,138 INFO L125 PetriNetUnfolderBase]: For 569948/569948 co-relation queries the response was YES. [2024-06-14 13:29:56,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43701 conditions, 5319 events. 3273/5319 cut-off events. For 569948/569948 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 33310 event pairs, 674 based on Foata normal form. 12/5325 useless extension candidates. Maximal degree in co-relation 43550. Up to 4780 conditions per place. [2024-06-14 13:29:56,215 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 338 selfloop transitions, 60 changer transitions 0/403 dead transitions. [2024-06-14 13:29:56,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 403 transitions, 5462 flow [2024-06-14 13:29:56,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 13:29:56,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 13:29:56,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-06-14 13:29:56,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-14 13:29:56,216 INFO L175 Difference]: Start difference. First operand has 318 places, 357 transitions, 4468 flow. Second operand 12 states and 225 transitions. [2024-06-14 13:29:56,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 403 transitions, 5462 flow [2024-06-14 13:29:57,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 403 transitions, 5326 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 13:29:57,531 INFO L231 Difference]: Finished difference. Result has 322 places, 357 transitions, 4458 flow [2024-06-14 13:29:57,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4332, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4458, PETRI_PLACES=322, PETRI_TRANSITIONS=357} [2024-06-14 13:29:57,531 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 279 predicate places. [2024-06-14 13:29:57,531 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 357 transitions, 4458 flow [2024-06-14 13:29:57,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:57,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:29:57,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:29:57,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 13:29:57,531 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:29:57,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:29:57,532 INFO L85 PathProgramCache]: Analyzing trace with hash -286714233, now seen corresponding path program 10 times [2024-06-14 13:29:57,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:29:57,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854269541] [2024-06-14 13:29:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:29:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:29:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:29:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:29:58,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:29:58,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854269541] [2024-06-14 13:29:58,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854269541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:29:58,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:29:58,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:29:58,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447159934] [2024-06-14 13:29:58,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:29:58,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:29:58,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:29:58,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:29:58,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:29:58,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:29:58,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 357 transitions, 4458 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:29:58,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:29:58,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:29:58,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:00,204 INFO L124 PetriNetUnfolderBase]: 3253/5287 cut-off events. [2024-06-14 13:30:00,204 INFO L125 PetriNetUnfolderBase]: For 546223/546223 co-relation queries the response was YES. [2024-06-14 13:30:00,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42522 conditions, 5287 events. 3253/5287 cut-off events. For 546223/546223 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 33223 event pairs, 638 based on Foata normal form. 12/5293 useless extension candidates. Maximal degree in co-relation 42370. Up to 4790 conditions per place. [2024-06-14 13:30:00,269 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 330 selfloop transitions, 57 changer transitions 0/392 dead transitions. [2024-06-14 13:30:00,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 392 transitions, 5220 flow [2024-06-14 13:30:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:30:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:30:00,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-14 13:30:00,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-14 13:30:00,270 INFO L175 Difference]: Start difference. First operand has 322 places, 357 transitions, 4458 flow. Second operand 10 states and 188 transitions. [2024-06-14 13:30:00,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 392 transitions, 5220 flow [2024-06-14 13:30:01,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 392 transitions, 4980 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-14 13:30:01,427 INFO L231 Difference]: Finished difference. Result has 318 places, 356 transitions, 4200 flow [2024-06-14 13:30:01,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4082, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4200, PETRI_PLACES=318, PETRI_TRANSITIONS=356} [2024-06-14 13:30:01,427 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 275 predicate places. [2024-06-14 13:30:01,427 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 356 transitions, 4200 flow [2024-06-14 13:30:01,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:01,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:01,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:01,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 13:30:01,428 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:01,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1178549313, now seen corresponding path program 4 times [2024-06-14 13:30:01,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:01,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286103301] [2024-06-14 13:30:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:01,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:02,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:02,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:02,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286103301] [2024-06-14 13:30:02,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286103301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:02,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:02,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:02,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826623463] [2024-06-14 13:30:02,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:02,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:02,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:02,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:02,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:02,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:02,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 356 transitions, 4200 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:02,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:02,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:02,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:03,372 INFO L124 PetriNetUnfolderBase]: 3287/5334 cut-off events. [2024-06-14 13:30:03,372 INFO L125 PetriNetUnfolderBase]: For 541891/541891 co-relation queries the response was YES. [2024-06-14 13:30:03,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43028 conditions, 5334 events. 3287/5334 cut-off events. For 541891/541891 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 33418 event pairs, 676 based on Foata normal form. 2/5330 useless extension candidates. Maximal degree in co-relation 42876. Up to 4868 conditions per place. [2024-06-14 13:30:03,450 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 310 selfloop transitions, 84 changer transitions 0/399 dead transitions. [2024-06-14 13:30:03,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 399 transitions, 5956 flow [2024-06-14 13:30:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:30:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:30:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-14 13:30:03,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-14 13:30:03,451 INFO L175 Difference]: Start difference. First operand has 318 places, 356 transitions, 4200 flow. Second operand 8 states and 157 transitions. [2024-06-14 13:30:03,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 399 transitions, 5956 flow [2024-06-14 13:30:04,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 399 transitions, 5627 flow, removed 19 selfloop flow, removed 12 redundant places. [2024-06-14 13:30:04,994 INFO L231 Difference]: Finished difference. Result has 315 places, 372 transitions, 4437 flow [2024-06-14 13:30:04,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3871, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4437, PETRI_PLACES=315, PETRI_TRANSITIONS=372} [2024-06-14 13:30:04,995 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 272 predicate places. [2024-06-14 13:30:04,995 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 372 transitions, 4437 flow [2024-06-14 13:30:04,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:04,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:04,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:04,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 13:30:04,995 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:04,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:04,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1178429343, now seen corresponding path program 5 times [2024-06-14 13:30:04,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:04,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967685166] [2024-06-14 13:30:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:04,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:05,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:05,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967685166] [2024-06-14 13:30:05,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967685166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:05,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:05,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:05,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959448076] [2024-06-14 13:30:05,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:05,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:05,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:05,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:05,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:05,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:05,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 372 transitions, 4437 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:05,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:05,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:05,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:07,075 INFO L124 PetriNetUnfolderBase]: 3307/5364 cut-off events. [2024-06-14 13:30:07,075 INFO L125 PetriNetUnfolderBase]: For 555959/555959 co-relation queries the response was YES. [2024-06-14 13:30:07,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42924 conditions, 5364 events. 3307/5364 cut-off events. For 555959/555959 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 33684 event pairs, 675 based on Foata normal form. 2/5360 useless extension candidates. Maximal degree in co-relation 42774. Up to 5049 conditions per place. [2024-06-14 13:30:07,156 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 335 selfloop transitions, 59 changer transitions 0/399 dead transitions. [2024-06-14 13:30:07,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 399 transitions, 5435 flow [2024-06-14 13:30:07,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:30:07,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:30:07,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-14 13:30:07,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-14 13:30:07,157 INFO L175 Difference]: Start difference. First operand has 315 places, 372 transitions, 4437 flow. Second operand 8 states and 148 transitions. [2024-06-14 13:30:07,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 399 transitions, 5435 flow [2024-06-14 13:30:08,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 399 transitions, 5266 flow, removed 76 selfloop flow, removed 2 redundant places. [2024-06-14 13:30:08,504 INFO L231 Difference]: Finished difference. Result has 321 places, 380 transitions, 4534 flow [2024-06-14 13:30:08,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4292, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4534, PETRI_PLACES=321, PETRI_TRANSITIONS=380} [2024-06-14 13:30:08,505 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 278 predicate places. [2024-06-14 13:30:08,505 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 380 transitions, 4534 flow [2024-06-14 13:30:08,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:08,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:08,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:08,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 13:30:08,505 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:08,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:08,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1178429157, now seen corresponding path program 4 times [2024-06-14 13:30:08,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:08,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807969922] [2024-06-14 13:30:08,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:08,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:09,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:09,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807969922] [2024-06-14 13:30:09,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807969922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:09,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:09,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:09,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785818534] [2024-06-14 13:30:09,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:09,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:09,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:09,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:09,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:09,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:09,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 380 transitions, 4534 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:09,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:09,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:09,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:10,384 INFO L124 PetriNetUnfolderBase]: 3351/5433 cut-off events. [2024-06-14 13:30:10,384 INFO L125 PetriNetUnfolderBase]: For 585703/585703 co-relation queries the response was YES. [2024-06-14 13:30:10,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43755 conditions, 5433 events. 3351/5433 cut-off events. For 585703/585703 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 34198 event pairs, 673 based on Foata normal form. 4/5431 useless extension candidates. Maximal degree in co-relation 43603. Up to 4970 conditions per place. [2024-06-14 13:30:10,464 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 330 selfloop transitions, 77 changer transitions 0/412 dead transitions. [2024-06-14 13:30:10,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 412 transitions, 5969 flow [2024-06-14 13:30:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:30:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:30:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-14 13:30:10,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-14 13:30:10,465 INFO L175 Difference]: Start difference. First operand has 321 places, 380 transitions, 4534 flow. Second operand 8 states and 156 transitions. [2024-06-14 13:30:10,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 412 transitions, 5969 flow [2024-06-14 13:30:12,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 412 transitions, 5816 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-14 13:30:12,025 INFO L231 Difference]: Finished difference. Result has 325 places, 386 transitions, 4692 flow [2024-06-14 13:30:12,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4381, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4692, PETRI_PLACES=325, PETRI_TRANSITIONS=386} [2024-06-14 13:30:12,025 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 282 predicate places. [2024-06-14 13:30:12,025 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 386 transitions, 4692 flow [2024-06-14 13:30:12,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:12,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:12,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:12,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 13:30:12,026 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:12,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:12,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1961001891, now seen corresponding path program 6 times [2024-06-14 13:30:12,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:12,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551097645] [2024-06-14 13:30:12,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:12,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:12,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:12,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551097645] [2024-06-14 13:30:12,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551097645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:12,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:12,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:12,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639638054] [2024-06-14 13:30:12,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:12,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:12,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:12,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:12,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:12,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:12,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 386 transitions, 4692 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:12,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:12,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:12,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:13,938 INFO L124 PetriNetUnfolderBase]: 3361/5447 cut-off events. [2024-06-14 13:30:13,939 INFO L125 PetriNetUnfolderBase]: For 595468/595468 co-relation queries the response was YES. [2024-06-14 13:30:13,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44453 conditions, 5447 events. 3361/5447 cut-off events. For 595468/595468 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 34306 event pairs, 689 based on Foata normal form. 2/5443 useless extension candidates. Maximal degree in co-relation 44300. Up to 4955 conditions per place. [2024-06-14 13:30:14,014 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 307 selfloop transitions, 102 changer transitions 0/414 dead transitions. [2024-06-14 13:30:14,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 414 transitions, 6044 flow [2024-06-14 13:30:14,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:30:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:30:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-14 13:30:14,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-06-14 13:30:14,015 INFO L175 Difference]: Start difference. First operand has 325 places, 386 transitions, 4692 flow. Second operand 8 states and 155 transitions. [2024-06-14 13:30:14,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 414 transitions, 6044 flow [2024-06-14 13:30:15,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 414 transitions, 5834 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-14 13:30:15,538 INFO L231 Difference]: Finished difference. Result has 328 places, 389 transitions, 4761 flow [2024-06-14 13:30:15,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4761, PETRI_PLACES=328, PETRI_TRANSITIONS=389} [2024-06-14 13:30:15,539 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 285 predicate places. [2024-06-14 13:30:15,539 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 389 transitions, 4761 flow [2024-06-14 13:30:15,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:15,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:15,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:15,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 13:30:15,539 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:15,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:15,540 INFO L85 PathProgramCache]: Analyzing trace with hash -909668643, now seen corresponding path program 7 times [2024-06-14 13:30:15,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:15,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86531277] [2024-06-14 13:30:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:15,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:16,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:16,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86531277] [2024-06-14 13:30:16,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86531277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:16,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:16,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:16,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041058528] [2024-06-14 13:30:16,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:16,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:16,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:16,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:16,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:16,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 389 transitions, 4761 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:16,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:16,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:16,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:17,491 INFO L124 PetriNetUnfolderBase]: 3371/5463 cut-off events. [2024-06-14 13:30:17,491 INFO L125 PetriNetUnfolderBase]: For 602259/602259 co-relation queries the response was YES. [2024-06-14 13:30:17,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44303 conditions, 5463 events. 3371/5463 cut-off events. For 602259/602259 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 34428 event pairs, 677 based on Foata normal form. 2/5459 useless extension candidates. Maximal degree in co-relation 44149. Up to 4965 conditions per place. [2024-06-14 13:30:17,572 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 299 selfloop transitions, 110 changer transitions 0/414 dead transitions. [2024-06-14 13:30:17,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 414 transitions, 5958 flow [2024-06-14 13:30:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:30:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:30:17,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-14 13:30:17,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-14 13:30:17,573 INFO L175 Difference]: Start difference. First operand has 328 places, 389 transitions, 4761 flow. Second operand 8 states and 151 transitions. [2024-06-14 13:30:17,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 414 transitions, 5958 flow [2024-06-14 13:30:19,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 414 transitions, 5684 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-14 13:30:19,248 INFO L231 Difference]: Finished difference. Result has 330 places, 393 transitions, 4812 flow [2024-06-14 13:30:19,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4498, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4812, PETRI_PLACES=330, PETRI_TRANSITIONS=393} [2024-06-14 13:30:19,249 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 287 predicate places. [2024-06-14 13:30:19,249 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 393 transitions, 4812 flow [2024-06-14 13:30:19,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:19,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:19,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:19,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 13:30:19,250 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:19,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:19,250 INFO L85 PathProgramCache]: Analyzing trace with hash -794644383, now seen corresponding path program 8 times [2024-06-14 13:30:19,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:19,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227125527] [2024-06-14 13:30:19,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:19,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:19,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:19,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227125527] [2024-06-14 13:30:19,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227125527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:19,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:19,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:19,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7582762] [2024-06-14 13:30:19,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:19,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:19,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:19,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:19,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:20,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:20,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 393 transitions, 4812 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:20,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:20,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:20,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:21,308 INFO L124 PetriNetUnfolderBase]: 3407/5531 cut-off events. [2024-06-14 13:30:21,308 INFO L125 PetriNetUnfolderBase]: For 623541/623541 co-relation queries the response was YES. [2024-06-14 13:30:21,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44945 conditions, 5531 events. 3407/5531 cut-off events. For 623541/623541 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 34962 event pairs, 683 based on Foata normal form. 2/5527 useless extension candidates. Maximal degree in co-relation 44791. Up to 5156 conditions per place. [2024-06-14 13:30:21,388 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 346 selfloop transitions, 78 changer transitions 0/429 dead transitions. [2024-06-14 13:30:21,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 429 transitions, 6203 flow [2024-06-14 13:30:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:30:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:30:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-14 13:30:21,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-06-14 13:30:21,390 INFO L175 Difference]: Start difference. First operand has 330 places, 393 transitions, 4812 flow. Second operand 10 states and 177 transitions. [2024-06-14 13:30:21,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 429 transitions, 6203 flow [2024-06-14 13:30:23,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 429 transitions, 5984 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-14 13:30:23,060 INFO L231 Difference]: Finished difference. Result has 338 places, 406 transitions, 5034 flow [2024-06-14 13:30:23,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4610, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5034, PETRI_PLACES=338, PETRI_TRANSITIONS=406} [2024-06-14 13:30:23,060 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 295 predicate places. [2024-06-14 13:30:23,061 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 406 transitions, 5034 flow [2024-06-14 13:30:23,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:23,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:23,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:23,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 13:30:23,061 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:23,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:23,061 INFO L85 PathProgramCache]: Analyzing trace with hash -794644197, now seen corresponding path program 5 times [2024-06-14 13:30:23,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:23,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389429957] [2024-06-14 13:30:23,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:23,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:23,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:23,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389429957] [2024-06-14 13:30:23,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389429957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:23,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:23,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:23,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897616262] [2024-06-14 13:30:23,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:23,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:23,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:23,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:23,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:23,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:23,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 406 transitions, 5034 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:23,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:23,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:23,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:24,972 INFO L124 PetriNetUnfolderBase]: 3459/5609 cut-off events. [2024-06-14 13:30:24,973 INFO L125 PetriNetUnfolderBase]: For 661713/661713 co-relation queries the response was YES. [2024-06-14 13:30:25,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45896 conditions, 5609 events. 3459/5609 cut-off events. For 661713/661713 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 35511 event pairs, 683 based on Foata normal form. 4/5607 useless extension candidates. Maximal degree in co-relation 45739. Up to 5080 conditions per place. [2024-06-14 13:30:25,061 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 348 selfloop transitions, 86 changer transitions 0/439 dead transitions. [2024-06-14 13:30:25,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 439 transitions, 6529 flow [2024-06-14 13:30:25,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:30:25,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:30:25,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-14 13:30:25,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-06-14 13:30:25,062 INFO L175 Difference]: Start difference. First operand has 338 places, 406 transitions, 5034 flow. Second operand 8 states and 155 transitions. [2024-06-14 13:30:25,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 439 transitions, 6529 flow [2024-06-14 13:30:26,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 439 transitions, 6369 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-14 13:30:26,976 INFO L231 Difference]: Finished difference. Result has 343 places, 412 transitions, 5161 flow [2024-06-14 13:30:26,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4874, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5161, PETRI_PLACES=343, PETRI_TRANSITIONS=412} [2024-06-14 13:30:26,976 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 300 predicate places. [2024-06-14 13:30:26,976 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 412 transitions, 5161 flow [2024-06-14 13:30:26,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:26,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:26,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:26,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 13:30:26,977 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:26,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:26,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2088851967, now seen corresponding path program 6 times [2024-06-14 13:30:26,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:26,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451328996] [2024-06-14 13:30:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:26,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:27,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:27,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451328996] [2024-06-14 13:30:27,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451328996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:27,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:27,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:27,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278610229] [2024-06-14 13:30:27,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:27,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:27,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:27,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:27,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:27,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:27,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 412 transitions, 5161 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:27,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:27,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:27,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:29,015 INFO L124 PetriNetUnfolderBase]: 3447/5598 cut-off events. [2024-06-14 13:30:29,015 INFO L125 PetriNetUnfolderBase]: For 657628/657628 co-relation queries the response was YES. [2024-06-14 13:30:29,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45597 conditions, 5598 events. 3447/5598 cut-off events. For 657628/657628 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 35528 event pairs, 863 based on Foata normal form. 4/5600 useless extension candidates. Maximal degree in co-relation 45439. Up to 5324 conditions per place. [2024-06-14 13:30:29,093 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 398 selfloop transitions, 26 changer transitions 0/429 dead transitions. [2024-06-14 13:30:29,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 429 transitions, 6079 flow [2024-06-14 13:30:29,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:30:29,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:30:29,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-14 13:30:29,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 13:30:29,094 INFO L175 Difference]: Start difference. First operand has 343 places, 412 transitions, 5161 flow. Second operand 8 states and 144 transitions. [2024-06-14 13:30:29,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 429 transitions, 6079 flow [2024-06-14 13:30:31,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 429 transitions, 5890 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-14 13:30:31,169 INFO L231 Difference]: Finished difference. Result has 347 places, 412 transitions, 5030 flow [2024-06-14 13:30:31,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4972, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5030, PETRI_PLACES=347, PETRI_TRANSITIONS=412} [2024-06-14 13:30:31,169 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 304 predicate places. [2024-06-14 13:30:31,169 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 412 transitions, 5030 flow [2024-06-14 13:30:31,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:31,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:31,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:31,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 13:30:31,170 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:31,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash 2088673221, now seen corresponding path program 9 times [2024-06-14 13:30:31,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:31,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460470151] [2024-06-14 13:30:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:31,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:31,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:31,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460470151] [2024-06-14 13:30:31,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460470151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:31,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:31,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:31,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098535428] [2024-06-14 13:30:31,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:31,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:31,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:31,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:31,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:31,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:31,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 412 transitions, 5030 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:31,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:31,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:31,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:33,251 INFO L124 PetriNetUnfolderBase]: 3441/5579 cut-off events. [2024-06-14 13:30:33,252 INFO L125 PetriNetUnfolderBase]: For 652643/652643 co-relation queries the response was YES. [2024-06-14 13:30:33,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45075 conditions, 5579 events. 3441/5579 cut-off events. For 652643/652643 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 35304 event pairs, 688 based on Foata normal form. 2/5575 useless extension candidates. Maximal degree in co-relation 44916. Up to 5207 conditions per place. [2024-06-14 13:30:33,326 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 348 selfloop transitions, 77 changer transitions 0/430 dead transitions. [2024-06-14 13:30:33,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 430 transitions, 5968 flow [2024-06-14 13:30:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:30:33,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:30:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-14 13:30:33,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-14 13:30:33,327 INFO L175 Difference]: Start difference. First operand has 347 places, 412 transitions, 5030 flow. Second operand 8 states and 146 transitions. [2024-06-14 13:30:33,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 430 transitions, 5968 flow [2024-06-14 13:30:35,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 430 transitions, 5834 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-14 13:30:35,420 INFO L231 Difference]: Finished difference. Result has 348 places, 412 transitions, 5056 flow [2024-06-14 13:30:35,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5056, PETRI_PLACES=348, PETRI_TRANSITIONS=412} [2024-06-14 13:30:35,421 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2024-06-14 13:30:35,421 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 412 transitions, 5056 flow [2024-06-14 13:30:35,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:35,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:35,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:35,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 13:30:35,421 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:35,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash 864271653, now seen corresponding path program 7 times [2024-06-14 13:30:35,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:35,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630420019] [2024-06-14 13:30:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:35,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:36,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:36,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630420019] [2024-06-14 13:30:36,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630420019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:36,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:36,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:36,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901664513] [2024-06-14 13:30:36,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:36,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:36,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:36,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:36,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:36,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:36,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 412 transitions, 5056 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:36,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:36,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:36,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:37,713 INFO L124 PetriNetUnfolderBase]: 3461/5620 cut-off events. [2024-06-14 13:30:37,713 INFO L125 PetriNetUnfolderBase]: For 675101/675101 co-relation queries the response was YES. [2024-06-14 13:30:37,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45487 conditions, 5620 events. 3461/5620 cut-off events. For 675101/675101 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 35675 event pairs, 684 based on Foata normal form. 4/5622 useless extension candidates. Maximal degree in co-relation 45327. Up to 5223 conditions per place. [2024-06-14 13:30:37,988 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 375 selfloop transitions, 58 changer transitions 0/438 dead transitions. [2024-06-14 13:30:37,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 438 transitions, 6277 flow [2024-06-14 13:30:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:30:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:30:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-14 13:30:37,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-06-14 13:30:37,989 INFO L175 Difference]: Start difference. First operand has 348 places, 412 transitions, 5056 flow. Second operand 7 states and 139 transitions. [2024-06-14 13:30:37,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 438 transitions, 6277 flow [2024-06-14 13:30:40,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 438 transitions, 6123 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 13:30:40,332 INFO L231 Difference]: Finished difference. Result has 348 places, 415 transitions, 5100 flow [2024-06-14 13:30:40,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4902, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5100, PETRI_PLACES=348, PETRI_TRANSITIONS=415} [2024-06-14 13:30:40,333 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2024-06-14 13:30:40,333 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 415 transitions, 5100 flow [2024-06-14 13:30:40,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:40,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:40,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:40,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 13:30:40,333 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:40,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:40,336 INFO L85 PathProgramCache]: Analyzing trace with hash 864271467, now seen corresponding path program 10 times [2024-06-14 13:30:40,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:40,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560433932] [2024-06-14 13:30:40,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:40,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:41,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:41,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560433932] [2024-06-14 13:30:41,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560433932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:41,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:41,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:41,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434731626] [2024-06-14 13:30:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:41,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:41,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:41,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:41,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:41,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:41,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 415 transitions, 5100 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:41,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:41,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:41,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:42,335 INFO L124 PetriNetUnfolderBase]: 3455/5610 cut-off events. [2024-06-14 13:30:42,335 INFO L125 PetriNetUnfolderBase]: For 670539/670539 co-relation queries the response was YES. [2024-06-14 13:30:42,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45388 conditions, 5610 events. 3455/5610 cut-off events. For 670539/670539 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 35658 event pairs, 681 based on Foata normal form. 2/5610 useless extension candidates. Maximal degree in co-relation 45227. Up to 5278 conditions per place. [2024-06-14 13:30:42,417 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 386 selfloop transitions, 47 changer transitions 0/438 dead transitions. [2024-06-14 13:30:42,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 438 transitions, 6055 flow [2024-06-14 13:30:42,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:30:42,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:30:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-14 13:30:42,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-14 13:30:42,418 INFO L175 Difference]: Start difference. First operand has 348 places, 415 transitions, 5100 flow. Second operand 7 states and 137 transitions. [2024-06-14 13:30:42,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 438 transitions, 6055 flow [2024-06-14 13:30:44,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 438 transitions, 5871 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-14 13:30:44,747 INFO L231 Difference]: Finished difference. Result has 349 places, 415 transitions, 5032 flow [2024-06-14 13:30:44,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4916, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5032, PETRI_PLACES=349, PETRI_TRANSITIONS=415} [2024-06-14 13:30:44,748 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 306 predicate places. [2024-06-14 13:30:44,748 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 415 transitions, 5032 flow [2024-06-14 13:30:44,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:44,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:44,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:44,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 13:30:44,749 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:44,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:44,750 INFO L85 PathProgramCache]: Analyzing trace with hash 864278163, now seen corresponding path program 8 times [2024-06-14 13:30:44,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:44,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425524699] [2024-06-14 13:30:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:44,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:45,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:45,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425524699] [2024-06-14 13:30:45,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425524699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:45,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:45,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:45,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42100630] [2024-06-14 13:30:45,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:45,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:45,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:45,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:45,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:45,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:45,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 415 transitions, 5032 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:45,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:45,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:45,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:46,621 INFO L124 PetriNetUnfolderBase]: 3475/5640 cut-off events. [2024-06-14 13:30:46,621 INFO L125 PetriNetUnfolderBase]: For 666362/666362 co-relation queries the response was YES. [2024-06-14 13:30:46,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45282 conditions, 5640 events. 3475/5640 cut-off events. For 666362/666362 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 35826 event pairs, 686 based on Foata normal form. 4/5642 useless extension candidates. Maximal degree in co-relation 45122. Up to 5344 conditions per place. [2024-06-14 13:30:46,701 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 397 selfloop transitions, 35 changer transitions 0/437 dead transitions. [2024-06-14 13:30:46,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 437 transitions, 6048 flow [2024-06-14 13:30:46,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:30:46,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:30:46,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-14 13:30:46,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445578231292517 [2024-06-14 13:30:46,704 INFO L175 Difference]: Start difference. First operand has 349 places, 415 transitions, 5032 flow. Second operand 7 states and 131 transitions. [2024-06-14 13:30:46,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 437 transitions, 6048 flow [2024-06-14 13:30:48,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 437 transitions, 5941 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 13:30:48,668 INFO L231 Difference]: Finished difference. Result has 350 places, 420 transitions, 5095 flow [2024-06-14 13:30:48,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4925, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5095, PETRI_PLACES=350, PETRI_TRANSITIONS=420} [2024-06-14 13:30:48,669 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 307 predicate places. [2024-06-14 13:30:48,669 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 420 transitions, 5095 flow [2024-06-14 13:30:48,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:48,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:48,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:48,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 13:30:48,669 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:48,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:48,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1164368517, now seen corresponding path program 9 times [2024-06-14 13:30:48,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:48,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53799718] [2024-06-14 13:30:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:48,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:49,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:49,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53799718] [2024-06-14 13:30:49,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53799718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:49,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:49,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:49,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793035194] [2024-06-14 13:30:49,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:49,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:49,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:49,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:49,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:49,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:49,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 420 transitions, 5095 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:49,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:49,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:49,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:50,576 INFO L124 PetriNetUnfolderBase]: 3495/5667 cut-off events. [2024-06-14 13:30:50,576 INFO L125 PetriNetUnfolderBase]: For 667399/667399 co-relation queries the response was YES. [2024-06-14 13:30:50,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45512 conditions, 5667 events. 3495/5667 cut-off events. For 667399/667399 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 35985 event pairs, 680 based on Foata normal form. 4/5665 useless extension candidates. Maximal degree in co-relation 45351. Up to 5104 conditions per place. [2024-06-14 13:30:50,657 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 343 selfloop transitions, 99 changer transitions 0/447 dead transitions. [2024-06-14 13:30:50,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 447 transitions, 6532 flow [2024-06-14 13:30:50,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:30:50,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:30:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-14 13:30:50,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2024-06-14 13:30:50,658 INFO L175 Difference]: Start difference. First operand has 350 places, 420 transitions, 5095 flow. Second operand 7 states and 141 transitions. [2024-06-14 13:30:50,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 447 transitions, 6532 flow [2024-06-14 13:30:52,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 447 transitions, 6437 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-14 13:30:52,503 INFO L231 Difference]: Finished difference. Result has 353 places, 423 transitions, 5276 flow [2024-06-14 13:30:52,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5004, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5276, PETRI_PLACES=353, PETRI_TRANSITIONS=423} [2024-06-14 13:30:52,503 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 310 predicate places. [2024-06-14 13:30:52,503 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 423 transitions, 5276 flow [2024-06-14 13:30:52,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:52,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:52,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:52,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 13:30:52,504 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:52,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:52,504 INFO L85 PathProgramCache]: Analyzing trace with hash 877021023, now seen corresponding path program 10 times [2024-06-14 13:30:52,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:52,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383746842] [2024-06-14 13:30:52,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:52,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:53,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:53,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383746842] [2024-06-14 13:30:53,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383746842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:53,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:53,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:53,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924898309] [2024-06-14 13:30:53,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:53,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:53,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:53,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:53,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:53,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:53,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 423 transitions, 5276 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:53,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:53,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:53,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:54,458 INFO L124 PetriNetUnfolderBase]: 3483/5662 cut-off events. [2024-06-14 13:30:54,458 INFO L125 PetriNetUnfolderBase]: For 650159/650159 co-relation queries the response was YES. [2024-06-14 13:30:54,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45193 conditions, 5662 events. 3483/5662 cut-off events. For 650159/650159 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 36065 event pairs, 686 based on Foata normal form. 4/5664 useless extension candidates. Maximal degree in co-relation 45032. Up to 5333 conditions per place. [2024-06-14 13:30:54,535 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 393 selfloop transitions, 44 changer transitions 0/442 dead transitions. [2024-06-14 13:30:54,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 442 transitions, 6226 flow [2024-06-14 13:30:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:30:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:30:54,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-14 13:30:54,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-14 13:30:54,537 INFO L175 Difference]: Start difference. First operand has 353 places, 423 transitions, 5276 flow. Second operand 6 states and 122 transitions. [2024-06-14 13:30:54,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 442 transitions, 6226 flow [2024-06-14 13:30:56,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 442 transitions, 5984 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-14 13:30:56,739 INFO L231 Difference]: Finished difference. Result has 353 places, 423 transitions, 5150 flow [2024-06-14 13:30:56,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5034, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5150, PETRI_PLACES=353, PETRI_TRANSITIONS=423} [2024-06-14 13:30:56,739 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 310 predicate places. [2024-06-14 13:30:56,740 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 423 transitions, 5150 flow [2024-06-14 13:30:56,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:56,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:30:56,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:30:56,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 13:30:56,740 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:30:56,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:30:56,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1164368703, now seen corresponding path program 11 times [2024-06-14 13:30:56,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:30:56,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055806723] [2024-06-14 13:30:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:30:56,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:30:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:30:57,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:30:57,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:30:57,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055806723] [2024-06-14 13:30:57,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055806723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:30:57,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:30:57,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:30:57,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241250457] [2024-06-14 13:30:57,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:30:57,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:30:57,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:30:57,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:30:57,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:30:57,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:30:57,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 423 transitions, 5150 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:30:57,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:30:57,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:30:57,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:30:58,872 INFO L124 PetriNetUnfolderBase]: 3477/5657 cut-off events. [2024-06-14 13:30:58,872 INFO L125 PetriNetUnfolderBase]: For 618984/618984 co-relation queries the response was YES. [2024-06-14 13:30:58,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44411 conditions, 5657 events. 3477/5657 cut-off events. For 618984/618984 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 36009 event pairs, 701 based on Foata normal form. 2/5653 useless extension candidates. Maximal degree in co-relation 44251. Up to 5200 conditions per place. [2024-06-14 13:30:58,960 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 365 selfloop transitions, 78 changer transitions 0/448 dead transitions. [2024-06-14 13:30:58,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 448 transitions, 6346 flow [2024-06-14 13:30:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:30:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:30:58,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-14 13:30:58,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-14 13:30:58,961 INFO L175 Difference]: Start difference. First operand has 353 places, 423 transitions, 5150 flow. Second operand 7 states and 140 transitions. [2024-06-14 13:30:58,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 448 transitions, 6346 flow [2024-06-14 13:31:01,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 448 transitions, 6194 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-14 13:31:01,011 INFO L231 Difference]: Finished difference. Result has 355 places, 423 transitions, 5171 flow [2024-06-14 13:31:01,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4998, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5171, PETRI_PLACES=355, PETRI_TRANSITIONS=423} [2024-06-14 13:31:01,011 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 312 predicate places. [2024-06-14 13:31:01,011 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 423 transitions, 5171 flow [2024-06-14 13:31:01,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:01,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:31:01,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:31:01,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 13:31:01,012 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:31:01,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:31:01,012 INFO L85 PathProgramCache]: Analyzing trace with hash 877200513, now seen corresponding path program 11 times [2024-06-14 13:31:01,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:31:01,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515800266] [2024-06-14 13:31:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:31:01,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:31:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:31:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:31:01,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:31:01,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515800266] [2024-06-14 13:31:01,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515800266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:31:01,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:31:01,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:31:01,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800686515] [2024-06-14 13:31:01,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:31:01,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:31:01,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:31:01,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:31:01,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:31:01,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:31:01,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 423 transitions, 5171 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:01,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:31:01,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:31:01,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:31:03,193 INFO L124 PetriNetUnfolderBase]: 3507/5708 cut-off events. [2024-06-14 13:31:03,193 INFO L125 PetriNetUnfolderBase]: For 639584/639584 co-relation queries the response was YES. [2024-06-14 13:31:03,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44947 conditions, 5708 events. 3507/5708 cut-off events. For 639584/639584 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 36460 event pairs, 691 based on Foata normal form. 4/5710 useless extension candidates. Maximal degree in co-relation 44786. Up to 5292 conditions per place. [2024-06-14 13:31:03,279 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 373 selfloop transitions, 76 changer transitions 0/454 dead transitions. [2024-06-14 13:31:03,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 454 transitions, 6280 flow [2024-06-14 13:31:03,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:31:03,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:31:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-14 13:31:03,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-14 13:31:03,280 INFO L175 Difference]: Start difference. First operand has 355 places, 423 transitions, 5171 flow. Second operand 7 states and 144 transitions. [2024-06-14 13:31:03,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 454 transitions, 6280 flow [2024-06-14 13:31:05,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 454 transitions, 6125 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 13:31:05,157 INFO L231 Difference]: Finished difference. Result has 356 places, 429 transitions, 5348 flow [2024-06-14 13:31:05,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5016, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5348, PETRI_PLACES=356, PETRI_TRANSITIONS=429} [2024-06-14 13:31:05,158 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 313 predicate places. [2024-06-14 13:31:05,158 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 429 transitions, 5348 flow [2024-06-14 13:31:05,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:05,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:31:05,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:31:05,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 13:31:05,158 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:31:05,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:31:05,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1160355171, now seen corresponding path program 12 times [2024-06-14 13:31:05,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:31:05,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360706832] [2024-06-14 13:31:05,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:31:05,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:31:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:31:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:31:05,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:31:05,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360706832] [2024-06-14 13:31:05,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360706832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:31:05,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:31:05,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:31:05,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874873676] [2024-06-14 13:31:05,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:31:05,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:31:05,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:31:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:31:05,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:31:05,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:31:05,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 429 transitions, 5348 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:05,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:31:05,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:31:05,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:31:07,209 INFO L124 PetriNetUnfolderBase]: 3495/5682 cut-off events. [2024-06-14 13:31:07,210 INFO L125 PetriNetUnfolderBase]: For 623503/623503 co-relation queries the response was YES. [2024-06-14 13:31:07,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44516 conditions, 5682 events. 3495/5682 cut-off events. For 623503/623503 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 36223 event pairs, 863 based on Foata normal form. 4/5684 useless extension candidates. Maximal degree in co-relation 44356. Up to 5374 conditions per place. [2024-06-14 13:31:07,300 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 408 selfloop transitions, 32 changer transitions 0/445 dead transitions. [2024-06-14 13:31:07,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 445 transitions, 6296 flow [2024-06-14 13:31:07,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:31:07,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:31:07,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-14 13:31:07,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421768707482993 [2024-06-14 13:31:07,301 INFO L175 Difference]: Start difference. First operand has 356 places, 429 transitions, 5348 flow. Second operand 7 states and 130 transitions. [2024-06-14 13:31:07,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 445 transitions, 6296 flow [2024-06-14 13:31:09,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 445 transitions, 6141 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-14 13:31:09,193 INFO L231 Difference]: Finished difference. Result has 359 places, 429 transitions, 5267 flow [2024-06-14 13:31:09,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5193, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5267, PETRI_PLACES=359, PETRI_TRANSITIONS=429} [2024-06-14 13:31:09,193 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 316 predicate places. [2024-06-14 13:31:09,193 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 429 transitions, 5267 flow [2024-06-14 13:31:09,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:09,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:31:09,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:31:09,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 13:31:09,194 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:31:09,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:31:09,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1811116671, now seen corresponding path program 12 times [2024-06-14 13:31:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:31:09,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796596312] [2024-06-14 13:31:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:31:09,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:31:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:31:09,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:31:09,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:31:09,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796596312] [2024-06-14 13:31:09,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796596312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:31:09,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:31:09,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:31:09,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43441368] [2024-06-14 13:31:09,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:31:09,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:31:09,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:31:09,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:31:09,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:31:09,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:31:09,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 429 transitions, 5267 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:09,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:31:09,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:31:09,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:31:11,158 INFO L124 PetriNetUnfolderBase]: 3489/5681 cut-off events. [2024-06-14 13:31:11,158 INFO L125 PetriNetUnfolderBase]: For 617054/617054 co-relation queries the response was YES. [2024-06-14 13:31:11,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44153 conditions, 5681 events. 3489/5681 cut-off events. For 617054/617054 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 36258 event pairs, 696 based on Foata normal form. 2/5677 useless extension candidates. Maximal degree in co-relation 43992. Up to 5221 conditions per place. [2024-06-14 13:31:11,239 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 363 selfloop transitions, 84 changer transitions 0/452 dead transitions. [2024-06-14 13:31:11,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 452 transitions, 6267 flow [2024-06-14 13:31:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:31:11,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:31:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-14 13:31:11,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-14 13:31:11,240 INFO L175 Difference]: Start difference. First operand has 359 places, 429 transitions, 5267 flow. Second operand 7 states and 138 transitions. [2024-06-14 13:31:11,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 452 transitions, 6267 flow [2024-06-14 13:31:13,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 452 transitions, 6042 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-14 13:31:13,196 INFO L231 Difference]: Finished difference. Result has 359 places, 429 transitions, 5222 flow [2024-06-14 13:31:13,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5042, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5222, PETRI_PLACES=359, PETRI_TRANSITIONS=429} [2024-06-14 13:31:13,197 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 316 predicate places. [2024-06-14 13:31:13,197 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 429 transitions, 5222 flow [2024-06-14 13:31:13,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:13,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:31:13,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:31:13,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 13:31:13,197 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:31:13,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:31:13,197 INFO L85 PathProgramCache]: Analyzing trace with hash -939111333, now seen corresponding path program 2 times [2024-06-14 13:31:13,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:31:13,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398529177] [2024-06-14 13:31:13,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:31:13,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:31:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:31:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:31:14,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:31:14,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398529177] [2024-06-14 13:31:14,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398529177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:31:14,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:31:14,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:31:14,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193166276] [2024-06-14 13:31:14,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:31:14,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:31:14,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:31:14,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:31:14,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:31:14,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:31:14,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 429 transitions, 5222 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:14,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:31:14,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:31:14,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:31:15,445 INFO L124 PetriNetUnfolderBase]: 3533/5750 cut-off events. [2024-06-14 13:31:15,445 INFO L125 PetriNetUnfolderBase]: For 660788/660788 co-relation queries the response was YES. [2024-06-14 13:31:15,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44480 conditions, 5750 events. 3533/5750 cut-off events. For 660788/660788 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 36777 event pairs, 591 based on Foata normal form. 12/5760 useless extension candidates. Maximal degree in co-relation 44320. Up to 5303 conditions per place. [2024-06-14 13:31:15,531 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 412 selfloop transitions, 37 changer transitions 0/454 dead transitions. [2024-06-14 13:31:15,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 454 transitions, 6280 flow [2024-06-14 13:31:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:31:15,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:31:15,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-14 13:31:15,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2024-06-14 13:31:15,532 INFO L175 Difference]: Start difference. First operand has 359 places, 429 transitions, 5222 flow. Second operand 6 states and 127 transitions. [2024-06-14 13:31:15,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 454 transitions, 6280 flow [2024-06-14 13:31:17,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 454 transitions, 6067 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 13:31:17,239 INFO L231 Difference]: Finished difference. Result has 358 places, 430 transitions, 5112 flow [2024-06-14 13:31:17,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5009, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5112, PETRI_PLACES=358, PETRI_TRANSITIONS=430} [2024-06-14 13:31:17,239 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 315 predicate places. [2024-06-14 13:31:17,240 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 430 transitions, 5112 flow [2024-06-14 13:31:17,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:17,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:31:17,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:31:17,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 13:31:17,240 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:31:17,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:31:17,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1367208003, now seen corresponding path program 3 times [2024-06-14 13:31:17,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:31:17,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682865945] [2024-06-14 13:31:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:31:17,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:31:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:31:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:31:18,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:31:18,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682865945] [2024-06-14 13:31:18,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682865945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:31:18,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:31:18,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:31:18,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522088054] [2024-06-14 13:31:18,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:31:18,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:31:18,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:31:18,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:31:18,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:31:18,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:31:18,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 430 transitions, 5112 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:18,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:31:18,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:31:18,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:31:19,504 INFO L124 PetriNetUnfolderBase]: 3577/5812 cut-off events. [2024-06-14 13:31:19,504 INFO L125 PetriNetUnfolderBase]: For 661338/661338 co-relation queries the response was YES. [2024-06-14 13:31:19,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44832 conditions, 5812 events. 3577/5812 cut-off events. For 661338/661338 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 37130 event pairs, 698 based on Foata normal form. 12/5822 useless extension candidates. Maximal degree in co-relation 44672. Up to 5341 conditions per place. [2024-06-14 13:31:19,581 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 407 selfloop transitions, 43 changer transitions 0/455 dead transitions. [2024-06-14 13:31:19,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 455 transitions, 6188 flow [2024-06-14 13:31:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:31:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:31:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-14 13:31:19,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-14 13:31:19,582 INFO L175 Difference]: Start difference. First operand has 358 places, 430 transitions, 5112 flow. Second operand 7 states and 138 transitions. [2024-06-14 13:31:19,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 455 transitions, 6188 flow [2024-06-14 13:31:21,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 455 transitions, 6121 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 13:31:21,277 INFO L231 Difference]: Finished difference. Result has 361 places, 431 transitions, 5157 flow [2024-06-14 13:31:21,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5045, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5157, PETRI_PLACES=361, PETRI_TRANSITIONS=431} [2024-06-14 13:31:21,277 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 318 predicate places. [2024-06-14 13:31:21,277 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 431 transitions, 5157 flow [2024-06-14 13:31:21,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:21,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:31:21,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:31:21,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 13:31:21,278 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:31:21,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:31:21,278 INFO L85 PathProgramCache]: Analyzing trace with hash -923874213, now seen corresponding path program 4 times [2024-06-14 13:31:21,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:31:21,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056699937] [2024-06-14 13:31:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:31:21,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:31:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:31:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:31:22,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:31:22,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056699937] [2024-06-14 13:31:22,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056699937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:31:22,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:31:22,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:31:22,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532990716] [2024-06-14 13:31:22,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:31:22,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:31:22,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:31:22,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:31:22,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:31:22,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:31:22,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 431 transitions, 5157 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:22,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:31:22,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:31:22,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:31:23,544 INFO L124 PetriNetUnfolderBase]: 3579/5830 cut-off events. [2024-06-14 13:31:23,544 INFO L125 PetriNetUnfolderBase]: For 637788/637788 co-relation queries the response was YES. [2024-06-14 13:31:23,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44690 conditions, 5830 events. 3579/5830 cut-off events. For 637788/637788 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 37349 event pairs, 589 based on Foata normal form. 8/5836 useless extension candidates. Maximal degree in co-relation 44529. Up to 5339 conditions per place. [2024-06-14 13:31:23,621 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 416 selfloop transitions, 40 changer transitions 0/461 dead transitions. [2024-06-14 13:31:23,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 461 transitions, 6287 flow [2024-06-14 13:31:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:31:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:31:23,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-14 13:31:23,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-14 13:31:23,622 INFO L175 Difference]: Start difference. First operand has 361 places, 431 transitions, 5157 flow. Second operand 7 states and 144 transitions. [2024-06-14 13:31:23,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 461 transitions, 6287 flow [2024-06-14 13:31:25,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 461 transitions, 6195 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 13:31:25,208 INFO L231 Difference]: Finished difference. Result has 363 places, 432 transitions, 5169 flow [2024-06-14 13:31:25,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5067, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5169, PETRI_PLACES=363, PETRI_TRANSITIONS=432} [2024-06-14 13:31:25,208 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 320 predicate places. [2024-06-14 13:31:25,209 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 432 transitions, 5169 flow [2024-06-14 13:31:25,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:25,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:31:25,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:31:25,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 13:31:25,209 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:31:25,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:31:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1970535011, now seen corresponding path program 1 times [2024-06-14 13:31:25,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:31:25,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135088523] [2024-06-14 13:31:25,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:31:25,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:31:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:31:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:31:26,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:31:26,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135088523] [2024-06-14 13:31:26,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135088523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:31:26,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:31:26,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:31:26,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330095501] [2024-06-14 13:31:26,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:31:26,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:31:26,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:31:26,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:31:26,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:31:26,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:31:26,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 432 transitions, 5169 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:26,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:31:26,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:31:26,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:31:27,682 INFO L124 PetriNetUnfolderBase]: 3552/5831 cut-off events. [2024-06-14 13:31:27,682 INFO L125 PetriNetUnfolderBase]: For 691586/691601 co-relation queries the response was YES. [2024-06-14 13:31:27,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45499 conditions, 5831 events. 3552/5831 cut-off events. For 691586/691601 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 37896 event pairs, 824 based on Foata normal form. 11/5829 useless extension candidates. Maximal degree in co-relation 45337. Up to 5153 conditions per place. [2024-06-14 13:31:27,754 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 358 selfloop transitions, 67 changer transitions 0/471 dead transitions. [2024-06-14 13:31:27,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 471 transitions, 6613 flow [2024-06-14 13:31:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:31:27,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:31:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-14 13:31:27,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-14 13:31:27,755 INFO L175 Difference]: Start difference. First operand has 363 places, 432 transitions, 5169 flow. Second operand 9 states and 183 transitions. [2024-06-14 13:31:27,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 471 transitions, 6613 flow [2024-06-14 13:31:29,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 471 transitions, 6525 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 13:31:29,462 INFO L231 Difference]: Finished difference. Result has 367 places, 434 transitions, 5265 flow [2024-06-14 13:31:29,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5081, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5265, PETRI_PLACES=367, PETRI_TRANSITIONS=434} [2024-06-14 13:31:29,462 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 324 predicate places. [2024-06-14 13:31:29,462 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 434 transitions, 5265 flow [2024-06-14 13:31:29,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:29,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:31:29,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:31:29,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 13:31:29,463 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:31:29,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:31:29,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1970595461, now seen corresponding path program 2 times [2024-06-14 13:31:29,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:31:29,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271320933] [2024-06-14 13:31:29,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:31:29,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:31:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:31:30,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:31:30,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:31:30,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271320933] [2024-06-14 13:31:30,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271320933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:31:30,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:31:30,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:31:30,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312432646] [2024-06-14 13:31:30,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:31:30,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:31:30,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:31:30,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:31:30,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:31:30,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:31:30,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 434 transitions, 5265 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:30,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:31:30,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:31:30,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:31:31,804 INFO L124 PetriNetUnfolderBase]: 3599/5904 cut-off events. [2024-06-14 13:31:31,804 INFO L125 PetriNetUnfolderBase]: For 706830/706845 co-relation queries the response was YES. [2024-06-14 13:31:31,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46015 conditions, 5904 events. 3599/5904 cut-off events. For 706830/706845 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 38383 event pairs, 853 based on Foata normal form. 12/5904 useless extension candidates. Maximal degree in co-relation 45852. Up to 5327 conditions per place. [2024-06-14 13:31:31,894 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 354 selfloop transitions, 68 changer transitions 0/468 dead transitions. [2024-06-14 13:31:31,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 468 transitions, 6480 flow [2024-06-14 13:31:31,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:31:31,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:31:31,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-14 13:31:31,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-14 13:31:31,895 INFO L175 Difference]: Start difference. First operand has 367 places, 434 transitions, 5265 flow. Second operand 9 states and 177 transitions. [2024-06-14 13:31:31,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 468 transitions, 6480 flow [2024-06-14 13:31:34,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 468 transitions, 6386 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 13:31:34,030 INFO L231 Difference]: Finished difference. Result has 371 places, 438 transitions, 5359 flow [2024-06-14 13:31:34,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5174, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5359, PETRI_PLACES=371, PETRI_TRANSITIONS=438} [2024-06-14 13:31:34,030 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 328 predicate places. [2024-06-14 13:31:34,031 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 438 transitions, 5359 flow [2024-06-14 13:31:34,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:34,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:31:34,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:31:34,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 13:31:34,031 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:31:34,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:31:34,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1973391971, now seen corresponding path program 3 times [2024-06-14 13:31:34,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:31:34,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964176707] [2024-06-14 13:31:34,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:31:34,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:31:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:31:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:31:35,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:31:35,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964176707] [2024-06-14 13:31:35,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964176707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:31:35,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:31:35,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:31:35,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954936942] [2024-06-14 13:31:35,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:31:35,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:31:35,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:31:35,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:31:35,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:31:35,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:31:35,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 438 transitions, 5359 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:35,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:31:35,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:31:35,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:31:36,516 INFO L124 PetriNetUnfolderBase]: 3665/6012 cut-off events. [2024-06-14 13:31:36,517 INFO L125 PetriNetUnfolderBase]: For 769083/769111 co-relation queries the response was YES. [2024-06-14 13:31:36,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47327 conditions, 6012 events. 3665/6012 cut-off events. For 769083/769111 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 39180 event pairs, 871 based on Foata normal form. 21/6017 useless extension candidates. Maximal degree in co-relation 47162. Up to 5448 conditions per place. [2024-06-14 13:31:36,605 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 374 selfloop transitions, 47 changer transitions 0/467 dead transitions. [2024-06-14 13:31:36,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 467 transitions, 6405 flow [2024-06-14 13:31:36,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:31:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:31:36,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-14 13:31:36,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-14 13:31:36,606 INFO L175 Difference]: Start difference. First operand has 371 places, 438 transitions, 5359 flow. Second operand 9 states and 172 transitions. [2024-06-14 13:31:36,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 467 transitions, 6405 flow [2024-06-14 13:31:38,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 467 transitions, 6293 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 13:31:38,960 INFO L231 Difference]: Finished difference. Result has 375 places, 440 transitions, 5402 flow [2024-06-14 13:31:38,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5247, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5402, PETRI_PLACES=375, PETRI_TRANSITIONS=440} [2024-06-14 13:31:38,960 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 332 predicate places. [2024-06-14 13:31:38,960 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 440 transitions, 5402 flow [2024-06-14 13:31:38,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:38,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:31:38,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:31:38,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 13:31:38,961 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:31:38,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:31:38,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2088683141, now seen corresponding path program 4 times [2024-06-14 13:31:38,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:31:38,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114118154] [2024-06-14 13:31:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:31:38,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:31:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:31:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:31:39,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:31:39,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114118154] [2024-06-14 13:31:39,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114118154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:31:39,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:31:39,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:31:39,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508846931] [2024-06-14 13:31:39,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:31:39,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:31:39,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:31:39,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:31:39,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:31:39,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:31:39,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 440 transitions, 5402 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:39,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:31:39,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:31:39,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:31:41,401 INFO L124 PetriNetUnfolderBase]: 3736/6123 cut-off events. [2024-06-14 13:31:41,401 INFO L125 PetriNetUnfolderBase]: For 775752/775756 co-relation queries the response was YES. [2024-06-14 13:31:41,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48215 conditions, 6123 events. 3736/6123 cut-off events. For 775752/775756 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 39994 event pairs, 884 based on Foata normal form. 21/6130 useless extension candidates. Maximal degree in co-relation 48049. Up to 5588 conditions per place. [2024-06-14 13:31:41,496 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 385 selfloop transitions, 35 changer transitions 0/466 dead transitions. [2024-06-14 13:31:41,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 466 transitions, 6440 flow [2024-06-14 13:31:41,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:31:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:31:41,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-14 13:31:41,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 13:31:41,497 INFO L175 Difference]: Start difference. First operand has 375 places, 440 transitions, 5402 flow. Second operand 9 states and 168 transitions. [2024-06-14 13:31:41,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 466 transitions, 6440 flow [2024-06-14 13:31:43,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 466 transitions, 6314 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 13:31:43,889 INFO L231 Difference]: Finished difference. Result has 376 places, 442 transitions, 5411 flow [2024-06-14 13:31:43,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5276, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5411, PETRI_PLACES=376, PETRI_TRANSITIONS=442} [2024-06-14 13:31:43,889 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 333 predicate places. [2024-06-14 13:31:43,889 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 442 transitions, 5411 flow [2024-06-14 13:31:43,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:43,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:31:43,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:31:43,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 13:31:43,890 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:31:43,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:31:43,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2088867839, now seen corresponding path program 1 times [2024-06-14 13:31:43,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:31:43,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27187439] [2024-06-14 13:31:43,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:31:43,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:31:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:31:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:31:44,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:31:44,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27187439] [2024-06-14 13:31:44,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27187439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:31:44,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:31:44,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:31:44,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238343849] [2024-06-14 13:31:44,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:31:44,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:31:44,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:31:44,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:31:44,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:31:44,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:31:44,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 442 transitions, 5411 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:44,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:31:44,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:31:44,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:31:46,293 INFO L124 PetriNetUnfolderBase]: 3859/6254 cut-off events. [2024-06-14 13:31:46,293 INFO L125 PetriNetUnfolderBase]: For 696896/696896 co-relation queries the response was YES. [2024-06-14 13:31:46,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49198 conditions, 6254 events. 3859/6254 cut-off events. For 696896/696896 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 40256 event pairs, 943 based on Foata normal form. 2/6254 useless extension candidates. Maximal degree in co-relation 49031. Up to 5966 conditions per place. [2024-06-14 13:31:46,400 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 427 selfloop transitions, 28 changer transitions 0/460 dead transitions. [2024-06-14 13:31:46,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 460 transitions, 6421 flow [2024-06-14 13:31:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:31:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:31:46,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-14 13:31:46,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-14 13:31:46,401 INFO L175 Difference]: Start difference. First operand has 376 places, 442 transitions, 5411 flow. Second operand 8 states and 142 transitions. [2024-06-14 13:31:46,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 460 transitions, 6421 flow [2024-06-14 13:31:48,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 460 transitions, 6342 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 13:31:48,871 INFO L231 Difference]: Finished difference. Result has 377 places, 444 transitions, 5447 flow [2024-06-14 13:31:48,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5332, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5447, PETRI_PLACES=377, PETRI_TRANSITIONS=444} [2024-06-14 13:31:48,871 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 334 predicate places. [2024-06-14 13:31:48,871 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 444 transitions, 5447 flow [2024-06-14 13:31:48,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:48,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:31:48,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:31:48,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 13:31:48,872 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:31:48,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:31:48,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1811126591, now seen corresponding path program 5 times [2024-06-14 13:31:48,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:31:48,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016541177] [2024-06-14 13:31:48,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:31:48,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:31:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:31:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:31:49,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:31:49,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016541177] [2024-06-14 13:31:49,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016541177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:31:49,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:31:49,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:31:49,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319109802] [2024-06-14 13:31:49,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:31:49,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:31:49,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:31:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:31:49,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:31:49,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-14 13:31:49,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 444 transitions, 5447 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:49,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:31:49,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-14 13:31:49,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:31:51,350 INFO L124 PetriNetUnfolderBase]: 3725/6112 cut-off events. [2024-06-14 13:31:51,350 INFO L125 PetriNetUnfolderBase]: For 705242/705246 co-relation queries the response was YES. [2024-06-14 13:31:51,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47090 conditions, 6112 events. 3725/6112 cut-off events. For 705242/705246 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 39958 event pairs, 861 based on Foata normal form. 13/6111 useless extension candidates. Maximal degree in co-relation 46922. Up to 5545 conditions per place. [2024-06-14 13:31:51,444 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 381 selfloop transitions, 48 changer transitions 0/475 dead transitions. [2024-06-14 13:31:51,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 475 transitions, 6641 flow [2024-06-14 13:31:51,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:31:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:31:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-14 13:31:51,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-14 13:31:51,445 INFO L175 Difference]: Start difference. First operand has 377 places, 444 transitions, 5447 flow. Second operand 8 states and 165 transitions. [2024-06-14 13:31:51,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 475 transitions, 6641 flow [2024-06-14 13:31:53,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 475 transitions, 6534 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-14 13:31:53,457 INFO L231 Difference]: Finished difference. Result has 379 places, 444 transitions, 5446 flow [2024-06-14 13:31:53,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5340, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5446, PETRI_PLACES=379, PETRI_TRANSITIONS=444} [2024-06-14 13:31:53,458 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 336 predicate places. [2024-06-14 13:31:53,458 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 444 transitions, 5446 flow [2024-06-14 13:31:53,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:53,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:31:53,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:31:53,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 13:31:53,458 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:31:53,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:31:53,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1817567399, now seen corresponding path program 2 times [2024-06-14 13:31:53,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:31:53,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112551993] [2024-06-14 13:31:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:31:53,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:31:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:31:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:31:54,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:31:54,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112551993] [2024-06-14 13:31:54,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112551993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:31:54,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:31:54,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:31:54,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165749587] [2024-06-14 13:31:54,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:31:54,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:31:54,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:31:54,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:31:54,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:31:54,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:31:54,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 444 transitions, 5446 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:54,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:31:54,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:31:54,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:31:55,650 INFO L124 PetriNetUnfolderBase]: 3849/6234 cut-off events. [2024-06-14 13:31:55,650 INFO L125 PetriNetUnfolderBase]: For 659876/659876 co-relation queries the response was YES. [2024-06-14 13:31:55,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48059 conditions, 6234 events. 3849/6234 cut-off events. For 659876/659876 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 40146 event pairs, 923 based on Foata normal form. 2/6234 useless extension candidates. Maximal degree in co-relation 47890. Up to 5948 conditions per place. [2024-06-14 13:31:55,756 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 426 selfloop transitions, 28 changer transitions 0/459 dead transitions. [2024-06-14 13:31:55,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 459 transitions, 6448 flow [2024-06-14 13:31:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:31:55,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:31:55,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-14 13:31:55,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44841269841269843 [2024-06-14 13:31:55,757 INFO L175 Difference]: Start difference. First operand has 379 places, 444 transitions, 5446 flow. Second operand 6 states and 113 transitions. [2024-06-14 13:31:55,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 459 transitions, 6448 flow [2024-06-14 13:31:58,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 459 transitions, 6370 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 13:31:58,097 INFO L231 Difference]: Finished difference. Result has 380 places, 446 transitions, 5491 flow [2024-06-14 13:31:58,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5368, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5491, PETRI_PLACES=380, PETRI_TRANSITIONS=446} [2024-06-14 13:31:58,097 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 337 predicate places. [2024-06-14 13:31:58,098 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 446 transitions, 5491 flow [2024-06-14 13:31:58,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:58,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:31:58,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:31:58,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 13:31:58,098 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:31:58,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:31:58,099 INFO L85 PathProgramCache]: Analyzing trace with hash -923867269, now seen corresponding path program 3 times [2024-06-14 13:31:58,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:31:58,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444392016] [2024-06-14 13:31:58,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:31:58,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:31:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:31:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:31:58,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:31:58,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444392016] [2024-06-14 13:31:58,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444392016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:31:58,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:31:58,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:31:58,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084452617] [2024-06-14 13:31:58,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:31:58,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:31:58,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:31:58,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:31:58,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:31:59,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:31:59,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 446 transitions, 5491 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:31:59,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:31:59,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:31:59,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:32:00,376 INFO L124 PetriNetUnfolderBase]: 3857/6258 cut-off events. [2024-06-14 13:32:00,376 INFO L125 PetriNetUnfolderBase]: For 671725/671725 co-relation queries the response was YES. [2024-06-14 13:32:00,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48256 conditions, 6258 events. 3857/6258 cut-off events. For 671725/671725 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 40356 event pairs, 940 based on Foata normal form. 2/6258 useless extension candidates. Maximal degree in co-relation 48086. Up to 5990 conditions per place. [2024-06-14 13:32:00,477 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 438 selfloop transitions, 15 changer transitions 0/458 dead transitions. [2024-06-14 13:32:00,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 458 transitions, 6481 flow [2024-06-14 13:32:00,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:32:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:32:00,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-14 13:32:00,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 13:32:00,478 INFO L175 Difference]: Start difference. First operand has 380 places, 446 transitions, 5491 flow. Second operand 6 states and 108 transitions. [2024-06-14 13:32:00,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 458 transitions, 6481 flow [2024-06-14 13:32:02,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 458 transitions, 6376 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-14 13:32:02,989 INFO L231 Difference]: Finished difference. Result has 382 places, 448 transitions, 5483 flow [2024-06-14 13:32:02,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5390, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5483, PETRI_PLACES=382, PETRI_TRANSITIONS=448} [2024-06-14 13:32:02,989 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 339 predicate places. [2024-06-14 13:32:02,989 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 448 transitions, 5483 flow [2024-06-14 13:32:02,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:02,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:32:02,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:32:02,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 13:32:02,990 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:32:02,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:32:02,990 INFO L85 PathProgramCache]: Analyzing trace with hash -924164187, now seen corresponding path program 1 times [2024-06-14 13:32:02,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:32:02,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217810068] [2024-06-14 13:32:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:32:02,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:32:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:32:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:32:03,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:32:03,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217810068] [2024-06-14 13:32:03,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217810068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:32:03,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:32:03,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:32:03,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444612947] [2024-06-14 13:32:03,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:32:03,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:32:03,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:32:03,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:32:03,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:32:03,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:32:03,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 448 transitions, 5483 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:03,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:32:03,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:32:03,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:32:05,293 INFO L124 PetriNetUnfolderBase]: 3842/6219 cut-off events. [2024-06-14 13:32:05,293 INFO L125 PetriNetUnfolderBase]: For 660188/660188 co-relation queries the response was YES. [2024-06-14 13:32:05,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47798 conditions, 6219 events. 3842/6219 cut-off events. For 660188/660188 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 40001 event pairs, 944 based on Foata normal form. 1/6218 useless extension candidates. Maximal degree in co-relation 47627. Up to 5923 conditions per place. [2024-06-14 13:32:05,391 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 423 selfloop transitions, 36 changer transitions 0/464 dead transitions. [2024-06-14 13:32:05,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 464 transitions, 6455 flow [2024-06-14 13:32:05,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:32:05,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:32:05,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-14 13:32:05,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-14 13:32:05,392 INFO L175 Difference]: Start difference. First operand has 382 places, 448 transitions, 5483 flow. Second operand 6 states and 120 transitions. [2024-06-14 13:32:05,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 464 transitions, 6455 flow [2024-06-14 13:32:07,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 464 transitions, 6348 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-14 13:32:07,828 INFO L231 Difference]: Finished difference. Result has 384 places, 448 transitions, 5466 flow [2024-06-14 13:32:07,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5376, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5466, PETRI_PLACES=384, PETRI_TRANSITIONS=448} [2024-06-14 13:32:07,828 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-14 13:32:07,829 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 448 transitions, 5466 flow [2024-06-14 13:32:07,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:07,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:32:07,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:32:07,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 13:32:07,829 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:32:07,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:32:07,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1153852549, now seen corresponding path program 4 times [2024-06-14 13:32:07,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:32:07,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77157579] [2024-06-14 13:32:07,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:32:07,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:32:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:32:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:32:08,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:32:08,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77157579] [2024-06-14 13:32:08,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77157579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:32:08,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:32:08,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:32:08,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321714466] [2024-06-14 13:32:08,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:32:08,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:32:08,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:32:08,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:32:08,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:32:08,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:32:08,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 448 transitions, 5466 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:08,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:32:08,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:32:08,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:32:10,073 INFO L124 PetriNetUnfolderBase]: 3837/6216 cut-off events. [2024-06-14 13:32:10,073 INFO L125 PetriNetUnfolderBase]: For 665808/665808 co-relation queries the response was YES. [2024-06-14 13:32:10,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47603 conditions, 6216 events. 3837/6216 cut-off events. For 665808/665808 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 40002 event pairs, 921 based on Foata normal form. 2/6216 useless extension candidates. Maximal degree in co-relation 47431. Up to 5916 conditions per place. [2024-06-14 13:32:10,165 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 423 selfloop transitions, 35 changer transitions 0/463 dead transitions. [2024-06-14 13:32:10,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 463 transitions, 6480 flow [2024-06-14 13:32:10,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:32:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:32:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-14 13:32:10,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:32:10,166 INFO L175 Difference]: Start difference. First operand has 384 places, 448 transitions, 5466 flow. Second operand 6 states and 114 transitions. [2024-06-14 13:32:10,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 463 transitions, 6480 flow [2024-06-14 13:32:12,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 463 transitions, 6378 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 13:32:12,702 INFO L231 Difference]: Finished difference. Result has 383 places, 450 transitions, 5508 flow [2024-06-14 13:32:12,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5364, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5508, PETRI_PLACES=383, PETRI_TRANSITIONS=450} [2024-06-14 13:32:12,703 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 340 predicate places. [2024-06-14 13:32:12,703 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 450 transitions, 5508 flow [2024-06-14 13:32:12,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:12,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:32:12,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:32:12,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 13:32:12,703 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:32:12,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:32:12,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1542473665, now seen corresponding path program 1 times [2024-06-14 13:32:12,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:32:12,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463039153] [2024-06-14 13:32:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:32:12,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:32:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:32:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:32:13,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:32:13,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463039153] [2024-06-14 13:32:13,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463039153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:32:13,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:32:13,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:32:13,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131973568] [2024-06-14 13:32:13,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:32:13,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:32:13,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:32:13,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:32:13,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:32:13,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:32:13,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 450 transitions, 5508 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:13,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:32:13,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:32:13,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:32:15,157 INFO L124 PetriNetUnfolderBase]: 3863/6260 cut-off events. [2024-06-14 13:32:15,158 INFO L125 PetriNetUnfolderBase]: For 677761/677761 co-relation queries the response was YES. [2024-06-14 13:32:15,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48245 conditions, 6260 events. 3863/6260 cut-off events. For 677761/677761 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 40353 event pairs, 760 based on Foata normal form. 2/6260 useless extension candidates. Maximal degree in co-relation 48073. Up to 5827 conditions per place. [2024-06-14 13:32:15,244 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 410 selfloop transitions, 73 changer transitions 0/488 dead transitions. [2024-06-14 13:32:15,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 488 transitions, 6978 flow [2024-06-14 13:32:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:32:15,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:32:15,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-14 13:32:15,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2024-06-14 13:32:15,245 INFO L175 Difference]: Start difference. First operand has 383 places, 450 transitions, 5508 flow. Second operand 10 states and 187 transitions. [2024-06-14 13:32:15,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 488 transitions, 6978 flow [2024-06-14 13:32:17,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 488 transitions, 6860 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-14 13:32:17,506 INFO L231 Difference]: Finished difference. Result has 390 places, 458 transitions, 5757 flow [2024-06-14 13:32:17,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5392, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5757, PETRI_PLACES=390, PETRI_TRANSITIONS=458} [2024-06-14 13:32:17,507 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 347 predicate places. [2024-06-14 13:32:17,507 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 458 transitions, 5757 flow [2024-06-14 13:32:17,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:17,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:32:17,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:32:17,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 13:32:17,508 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:32:17,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:32:17,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1973112906, now seen corresponding path program 1 times [2024-06-14 13:32:17,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:32:17,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837659907] [2024-06-14 13:32:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:32:17,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:32:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:32:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:32:18,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:32:18,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837659907] [2024-06-14 13:32:18,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837659907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:32:18,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:32:18,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:32:18,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285738224] [2024-06-14 13:32:18,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:32:18,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:32:18,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:32:18,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:32:18,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:32:18,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:32:18,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 458 transitions, 5757 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:18,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:32:18,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:32:18,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:32:19,734 INFO L124 PetriNetUnfolderBase]: 3915/6330 cut-off events. [2024-06-14 13:32:19,734 INFO L125 PetriNetUnfolderBase]: For 721057/721057 co-relation queries the response was YES. [2024-06-14 13:32:19,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50433 conditions, 6330 events. 3915/6330 cut-off events. For 721057/721057 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 40759 event pairs, 762 based on Foata normal form. 4/6332 useless extension candidates. Maximal degree in co-relation 50259. Up to 5756 conditions per place. [2024-06-14 13:32:19,829 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 410 selfloop transitions, 80 changer transitions 0/495 dead transitions. [2024-06-14 13:32:19,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 495 transitions, 7287 flow [2024-06-14 13:32:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:32:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:32:19,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-14 13:32:19,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-14 13:32:19,830 INFO L175 Difference]: Start difference. First operand has 390 places, 458 transitions, 5757 flow. Second operand 9 states and 175 transitions. [2024-06-14 13:32:19,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 495 transitions, 7287 flow [2024-06-14 13:32:22,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 495 transitions, 7107 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-14 13:32:22,016 INFO L231 Difference]: Finished difference. Result has 393 places, 464 transitions, 5921 flow [2024-06-14 13:32:22,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5577, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5921, PETRI_PLACES=393, PETRI_TRANSITIONS=464} [2024-06-14 13:32:22,017 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 350 predicate places. [2024-06-14 13:32:22,017 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 464 transitions, 5921 flow [2024-06-14 13:32:22,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:22,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:32:22,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:32:22,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 13:32:22,017 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:32:22,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:32:22,017 INFO L85 PathProgramCache]: Analyzing trace with hash -420840570, now seen corresponding path program 2 times [2024-06-14 13:32:22,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:32:22,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163924783] [2024-06-14 13:32:22,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:32:22,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:32:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:32:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:32:22,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:32:22,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163924783] [2024-06-14 13:32:22,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163924783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:32:22,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:32:22,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:32:22,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736347335] [2024-06-14 13:32:22,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:32:22,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:32:22,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:32:22,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:32:22,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:32:22,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:32:22,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 464 transitions, 5921 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:22,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:32:22,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:32:22,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:32:24,446 INFO L124 PetriNetUnfolderBase]: 3967/6400 cut-off events. [2024-06-14 13:32:24,446 INFO L125 PetriNetUnfolderBase]: For 765155/765155 co-relation queries the response was YES. [2024-06-14 13:32:24,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52327 conditions, 6400 events. 3967/6400 cut-off events. For 765155/765155 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 41225 event pairs, 758 based on Foata normal form. 4/6402 useless extension candidates. Maximal degree in co-relation 52151. Up to 5933 conditions per place. [2024-06-14 13:32:24,546 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 427 selfloop transitions, 68 changer transitions 0/500 dead transitions. [2024-06-14 13:32:24,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 500 transitions, 7478 flow [2024-06-14 13:32:24,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:32:24,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:32:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-14 13:32:24,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-14 13:32:24,547 INFO L175 Difference]: Start difference. First operand has 393 places, 464 transitions, 5921 flow. Second operand 9 states and 173 transitions. [2024-06-14 13:32:24,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 500 transitions, 7478 flow [2024-06-14 13:32:27,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 500 transitions, 7258 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-14 13:32:27,809 INFO L231 Difference]: Finished difference. Result has 397 places, 470 transitions, 6033 flow [2024-06-14 13:32:27,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5745, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6033, PETRI_PLACES=397, PETRI_TRANSITIONS=470} [2024-06-14 13:32:27,809 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 354 predicate places. [2024-06-14 13:32:27,809 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 470 transitions, 6033 flow [2024-06-14 13:32:27,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:27,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:32:27,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:32:27,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 13:32:27,809 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:32:27,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:32:27,810 INFO L85 PathProgramCache]: Analyzing trace with hash -420834990, now seen corresponding path program 3 times [2024-06-14 13:32:27,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:32:27,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087135397] [2024-06-14 13:32:27,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:32:27,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:32:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:32:28,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:32:28,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:32:28,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087135397] [2024-06-14 13:32:28,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087135397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:32:28,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:32:28,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:32:28,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616463318] [2024-06-14 13:32:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:32:28,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:32:28,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:32:28,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:32:28,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:32:28,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:32:28,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 470 transitions, 6033 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:28,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:32:28,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:32:28,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:32:30,184 INFO L124 PetriNetUnfolderBase]: 3955/6384 cut-off events. [2024-06-14 13:32:30,184 INFO L125 PetriNetUnfolderBase]: For 752383/752383 co-relation queries the response was YES. [2024-06-14 13:32:30,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51681 conditions, 6384 events. 3955/6384 cut-off events. For 752383/752383 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 41176 event pairs, 764 based on Foata normal form. 4/6386 useless extension candidates. Maximal degree in co-relation 51503. Up to 5925 conditions per place. [2024-06-14 13:32:30,286 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 427 selfloop transitions, 70 changer transitions 0/502 dead transitions. [2024-06-14 13:32:30,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 502 transitions, 7222 flow [2024-06-14 13:32:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:32:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:32:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-14 13:32:30,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2024-06-14 13:32:30,287 INFO L175 Difference]: Start difference. First operand has 397 places, 470 transitions, 6033 flow. Second operand 11 states and 200 transitions. [2024-06-14 13:32:30,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 502 transitions, 7222 flow [2024-06-14 13:32:33,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 502 transitions, 7044 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-14 13:32:33,099 INFO L231 Difference]: Finished difference. Result has 403 places, 470 transitions, 6001 flow [2024-06-14 13:32:33,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5855, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6001, PETRI_PLACES=403, PETRI_TRANSITIONS=470} [2024-06-14 13:32:33,099 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 360 predicate places. [2024-06-14 13:32:33,099 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 470 transitions, 6001 flow [2024-06-14 13:32:33,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:33,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:32:33,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:32:33,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 13:32:33,100 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:32:33,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:32:33,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2026865773, now seen corresponding path program 2 times [2024-06-14 13:32:33,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:32:33,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662295857] [2024-06-14 13:32:33,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:32:33,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:32:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:32:34,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:32:34,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:32:34,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662295857] [2024-06-14 13:32:34,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662295857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:32:34,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:32:34,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:32:34,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162328351] [2024-06-14 13:32:34,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:32:34,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:32:34,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:32:34,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:32:34,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:32:34,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:32:34,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 470 transitions, 6001 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:34,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:32:34,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:32:34,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:32:35,688 INFO L124 PetriNetUnfolderBase]: 3965/6398 cut-off events. [2024-06-14 13:32:35,688 INFO L125 PetriNetUnfolderBase]: For 751682/751682 co-relation queries the response was YES. [2024-06-14 13:32:35,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51863 conditions, 6398 events. 3965/6398 cut-off events. For 751682/751682 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 41208 event pairs, 765 based on Foata normal form. 2/6398 useless extension candidates. Maximal degree in co-relation 51683. Up to 6071 conditions per place. [2024-06-14 13:32:35,791 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 446 selfloop transitions, 45 changer transitions 0/496 dead transitions. [2024-06-14 13:32:35,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 496 transitions, 7148 flow [2024-06-14 13:32:35,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:32:35,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:32:35,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-14 13:32:35,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-14 13:32:35,791 INFO L175 Difference]: Start difference. First operand has 403 places, 470 transitions, 6001 flow. Second operand 9 states and 163 transitions. [2024-06-14 13:32:35,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 496 transitions, 7148 flow [2024-06-14 13:32:38,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 496 transitions, 6993 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 13:32:38,524 INFO L231 Difference]: Finished difference. Result has 402 places, 474 transitions, 6029 flow [2024-06-14 13:32:38,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5846, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6029, PETRI_PLACES=402, PETRI_TRANSITIONS=474} [2024-06-14 13:32:38,525 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 359 predicate places. [2024-06-14 13:32:38,525 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 474 transitions, 6029 flow [2024-06-14 13:32:38,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:38,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:32:38,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:32:38,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 13:32:38,526 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:32:38,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:32:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash 775269254, now seen corresponding path program 4 times [2024-06-14 13:32:38,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:32:38,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444641492] [2024-06-14 13:32:38,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:32:38,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:32:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:32:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:32:39,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:32:39,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444641492] [2024-06-14 13:32:39,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444641492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:32:39,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:32:39,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:32:39,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571649956] [2024-06-14 13:32:39,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:32:39,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:32:39,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:32:39,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:32:39,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:32:39,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:32:39,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 474 transitions, 6029 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:39,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:32:39,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:32:39,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:32:41,037 INFO L124 PetriNetUnfolderBase]: 4017/6478 cut-off events. [2024-06-14 13:32:41,037 INFO L125 PetriNetUnfolderBase]: For 800872/800872 co-relation queries the response was YES. [2024-06-14 13:32:41,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53046 conditions, 6478 events. 4017/6478 cut-off events. For 800872/800872 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 41794 event pairs, 778 based on Foata normal form. 4/6480 useless extension candidates. Maximal degree in co-relation 52865. Up to 6092 conditions per place. [2024-06-14 13:32:41,132 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 453 selfloop transitions, 47 changer transitions 0/505 dead transitions. [2024-06-14 13:32:41,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 505 transitions, 7534 flow [2024-06-14 13:32:41,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:32:41,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:32:41,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-14 13:32:41,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-14 13:32:41,133 INFO L175 Difference]: Start difference. First operand has 402 places, 474 transitions, 6029 flow. Second operand 9 states and 167 transitions. [2024-06-14 13:32:41,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 505 transitions, 7534 flow [2024-06-14 13:32:43,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 505 transitions, 7391 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-14 13:32:43,727 INFO L231 Difference]: Finished difference. Result has 404 places, 480 transitions, 6144 flow [2024-06-14 13:32:43,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5886, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6144, PETRI_PLACES=404, PETRI_TRANSITIONS=480} [2024-06-14 13:32:43,727 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 361 predicate places. [2024-06-14 13:32:43,727 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 480 transitions, 6144 flow [2024-06-14 13:32:43,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:43,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:32:43,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:32:43,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 13:32:43,728 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:32:43,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:32:43,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1064626657, now seen corresponding path program 1 times [2024-06-14 13:32:43,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:32:43,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695909651] [2024-06-14 13:32:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:32:43,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:32:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:32:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:32:44,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:32:44,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695909651] [2024-06-14 13:32:44,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695909651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:32:44,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:32:44,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:32:44,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976852161] [2024-06-14 13:32:44,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:32:44,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:32:44,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:32:44,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:32:44,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:32:44,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:32:44,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 480 transitions, 6144 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:44,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:32:44,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:32:44,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:32:46,334 INFO L124 PetriNetUnfolderBase]: 4027/6486 cut-off events. [2024-06-14 13:32:46,335 INFO L125 PetriNetUnfolderBase]: For 802253/802253 co-relation queries the response was YES. [2024-06-14 13:32:46,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53320 conditions, 6486 events. 4027/6486 cut-off events. For 802253/802253 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 41807 event pairs, 770 based on Foata normal form. 2/6486 useless extension candidates. Maximal degree in co-relation 53138. Up to 6168 conditions per place. [2024-06-14 13:32:46,425 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 461 selfloop transitions, 43 changer transitions 0/509 dead transitions. [2024-06-14 13:32:46,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 509 transitions, 7400 flow [2024-06-14 13:32:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:32:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:32:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-14 13:32:46,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-14 13:32:46,426 INFO L175 Difference]: Start difference. First operand has 404 places, 480 transitions, 6144 flow. Second operand 8 states and 148 transitions. [2024-06-14 13:32:46,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 509 transitions, 7400 flow [2024-06-14 13:32:49,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 509 transitions, 7274 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-14 13:32:49,197 INFO L231 Difference]: Finished difference. Result has 409 places, 491 transitions, 6338 flow [2024-06-14 13:32:49,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6018, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6338, PETRI_PLACES=409, PETRI_TRANSITIONS=491} [2024-06-14 13:32:49,198 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 366 predicate places. [2024-06-14 13:32:49,198 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 491 transitions, 6338 flow [2024-06-14 13:32:49,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:49,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:32:49,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:32:49,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 13:32:49,198 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:32:49,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:32:49,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1071991699, now seen corresponding path program 3 times [2024-06-14 13:32:49,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:32:49,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655585509] [2024-06-14 13:32:49,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:32:49,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:32:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:32:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:32:50,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:32:50,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655585509] [2024-06-14 13:32:50,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655585509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:32:50,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:32:50,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:32:50,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899443743] [2024-06-14 13:32:50,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:32:50,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:32:50,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:32:50,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:32:50,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:32:50,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:32:50,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 491 transitions, 6338 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:50,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:32:50,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:32:50,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:32:51,787 INFO L124 PetriNetUnfolderBase]: 4037/6490 cut-off events. [2024-06-14 13:32:51,787 INFO L125 PetriNetUnfolderBase]: For 819331/819331 co-relation queries the response was YES. [2024-06-14 13:32:51,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54292 conditions, 6490 events. 4037/6490 cut-off events. For 819331/819331 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 41704 event pairs, 780 based on Foata normal form. 2/6490 useless extension candidates. Maximal degree in co-relation 54106. Up to 6208 conditions per place. [2024-06-14 13:32:51,891 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 477 selfloop transitions, 32 changer transitions 0/514 dead transitions. [2024-06-14 13:32:51,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 514 transitions, 7523 flow [2024-06-14 13:32:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:32:51,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:32:51,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-14 13:32:51,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-14 13:32:51,893 INFO L175 Difference]: Start difference. First operand has 409 places, 491 transitions, 6338 flow. Second operand 9 states and 158 transitions. [2024-06-14 13:32:51,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 514 transitions, 7523 flow [2024-06-14 13:32:54,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 514 transitions, 7377 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-14 13:32:54,938 INFO L231 Difference]: Finished difference. Result has 414 places, 495 transitions, 6357 flow [2024-06-14 13:32:54,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6192, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6357, PETRI_PLACES=414, PETRI_TRANSITIONS=495} [2024-06-14 13:32:54,939 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 371 predicate places. [2024-06-14 13:32:54,939 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 495 transitions, 6357 flow [2024-06-14 13:32:54,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:54,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:32:54,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:32:54,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 13:32:54,940 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:32:54,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:32:54,941 INFO L85 PathProgramCache]: Analyzing trace with hash 782626484, now seen corresponding path program 5 times [2024-06-14 13:32:54,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:32:54,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096304155] [2024-06-14 13:32:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:32:54,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:32:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:32:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:32:55,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:32:55,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096304155] [2024-06-14 13:32:55,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096304155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:32:55,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:32:55,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:32:55,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118264613] [2024-06-14 13:32:55,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:32:55,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:32:55,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:32:55,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:32:55,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:32:55,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:32:55,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 495 transitions, 6357 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:32:55,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:32:55,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:32:55,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:32:57,405 INFO L124 PetriNetUnfolderBase]: 4057/6516 cut-off events. [2024-06-14 13:32:57,405 INFO L125 PetriNetUnfolderBase]: For 846152/846152 co-relation queries the response was YES. [2024-06-14 13:32:57,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54565 conditions, 6516 events. 4057/6516 cut-off events. For 846152/846152 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 41837 event pairs, 775 based on Foata normal form. 4/6518 useless extension candidates. Maximal degree in co-relation 54378. Up to 6210 conditions per place. [2024-06-14 13:32:57,515 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 478 selfloop transitions, 36 changer transitions 0/519 dead transitions. [2024-06-14 13:32:57,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 519 transitions, 7561 flow [2024-06-14 13:32:57,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:32:57,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:32:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-14 13:32:57,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-14 13:32:57,516 INFO L175 Difference]: Start difference. First operand has 414 places, 495 transitions, 6357 flow. Second operand 9 states and 161 transitions. [2024-06-14 13:32:57,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 519 transitions, 7561 flow [2024-06-14 13:33:00,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 519 transitions, 7448 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-14 13:33:00,935 INFO L231 Difference]: Finished difference. Result has 417 places, 498 transitions, 6394 flow [2024-06-14 13:33:00,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6244, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6394, PETRI_PLACES=417, PETRI_TRANSITIONS=498} [2024-06-14 13:33:00,936 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 374 predicate places. [2024-06-14 13:33:00,936 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 498 transitions, 6394 flow [2024-06-14 13:33:00,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:00,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:33:00,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:33:00,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 13:33:00,936 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:33:00,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:33:00,937 INFO L85 PathProgramCache]: Analyzing trace with hash 775274834, now seen corresponding path program 6 times [2024-06-14 13:33:00,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:33:00,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037736543] [2024-06-14 13:33:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:33:00,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:33:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:33:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:33:01,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:33:01,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037736543] [2024-06-14 13:33:01,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037736543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:33:01,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:33:01,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:33:01,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222406362] [2024-06-14 13:33:01,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:33:01,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:33:01,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:33:01,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:33:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:33:01,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:33:01,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 498 transitions, 6394 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:01,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:33:01,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:33:01,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:33:03,384 INFO L124 PetriNetUnfolderBase]: 4045/6498 cut-off events. [2024-06-14 13:33:03,384 INFO L125 PetriNetUnfolderBase]: For 835926/835926 co-relation queries the response was YES. [2024-06-14 13:33:03,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54058 conditions, 6498 events. 4045/6498 cut-off events. For 835926/835926 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 41721 event pairs, 775 based on Foata normal form. 4/6500 useless extension candidates. Maximal degree in co-relation 53870. Up to 6128 conditions per place. [2024-06-14 13:33:03,494 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 468 selfloop transitions, 49 changer transitions 0/522 dead transitions. [2024-06-14 13:33:03,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 522 transitions, 7575 flow [2024-06-14 13:33:03,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:33:03,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:33:03,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-14 13:33:03,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-14 13:33:03,495 INFO L175 Difference]: Start difference. First operand has 417 places, 498 transitions, 6394 flow. Second operand 9 states and 167 transitions. [2024-06-14 13:33:03,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 522 transitions, 7575 flow [2024-06-14 13:33:06,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 522 transitions, 7421 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-14 13:33:06,975 INFO L231 Difference]: Finished difference. Result has 419 places, 498 transitions, 6344 flow [2024-06-14 13:33:06,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6240, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6344, PETRI_PLACES=419, PETRI_TRANSITIONS=498} [2024-06-14 13:33:06,975 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 376 predicate places. [2024-06-14 13:33:06,975 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 498 transitions, 6344 flow [2024-06-14 13:33:06,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:06,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:33:06,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:33:06,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 13:33:06,976 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:33:06,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:33:06,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1766268657, now seen corresponding path program 4 times [2024-06-14 13:33:06,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:33:06,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542299413] [2024-06-14 13:33:06,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:33:06,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:33:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:33:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:33:07,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:33:07,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542299413] [2024-06-14 13:33:07,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542299413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:33:07,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:33:07,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:33:07,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262712283] [2024-06-14 13:33:07,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:33:07,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:33:07,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:33:07,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:33:07,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:33:07,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:33:07,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 498 transitions, 6344 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:07,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:33:07,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:33:07,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:33:09,597 INFO L124 PetriNetUnfolderBase]: 4079/6542 cut-off events. [2024-06-14 13:33:09,597 INFO L125 PetriNetUnfolderBase]: For 857614/857614 co-relation queries the response was YES. [2024-06-14 13:33:09,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54903 conditions, 6542 events. 4079/6542 cut-off events. For 857614/857614 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 42019 event pairs, 786 based on Foata normal form. 2/6533 useless extension candidates. Maximal degree in co-relation 54714. Up to 5691 conditions per place. [2024-06-14 13:33:09,703 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 349 selfloop transitions, 201 changer transitions 0/555 dead transitions. [2024-06-14 13:33:09,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 555 transitions, 8772 flow [2024-06-14 13:33:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:33:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:33:09,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-14 13:33:09,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45670995670995673 [2024-06-14 13:33:09,704 INFO L175 Difference]: Start difference. First operand has 419 places, 498 transitions, 6344 flow. Second operand 11 states and 211 transitions. [2024-06-14 13:33:09,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 555 transitions, 8772 flow [2024-06-14 13:33:12,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 555 transitions, 8649 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 13:33:12,816 INFO L231 Difference]: Finished difference. Result has 425 places, 521 transitions, 7315 flow [2024-06-14 13:33:12,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6221, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7315, PETRI_PLACES=425, PETRI_TRANSITIONS=521} [2024-06-14 13:33:12,816 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 382 predicate places. [2024-06-14 13:33:12,816 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 521 transitions, 7315 flow [2024-06-14 13:33:12,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:12,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:33:12,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:33:12,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 13:33:12,817 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:33:12,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:33:12,817 INFO L85 PathProgramCache]: Analyzing trace with hash 958907115, now seen corresponding path program 5 times [2024-06-14 13:33:12,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:33:12,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522627710] [2024-06-14 13:33:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:33:12,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:33:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:33:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:33:13,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:33:13,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522627710] [2024-06-14 13:33:13,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522627710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:33:13,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:33:13,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:33:13,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211633026] [2024-06-14 13:33:13,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:33:13,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:33:13,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:33:13,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:33:13,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:33:13,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:33:13,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 521 transitions, 7315 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:13,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:33:13,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:33:13,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:33:15,360 INFO L124 PetriNetUnfolderBase]: 4102/6580 cut-off events. [2024-06-14 13:33:15,360 INFO L125 PetriNetUnfolderBase]: For 887511/887511 co-relation queries the response was YES. [2024-06-14 13:33:15,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57629 conditions, 6580 events. 4102/6580 cut-off events. For 887511/887511 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 42287 event pairs, 779 based on Foata normal form. 1/6575 useless extension candidates. Maximal degree in co-relation 57436. Up to 6070 conditions per place. [2024-06-14 13:33:15,472 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 461 selfloop transitions, 129 changer transitions 0/595 dead transitions. [2024-06-14 13:33:15,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 595 transitions, 9883 flow [2024-06-14 13:33:15,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:33:15,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:33:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-14 13:33:15,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-14 13:33:15,473 INFO L175 Difference]: Start difference. First operand has 425 places, 521 transitions, 7315 flow. Second operand 9 states and 167 transitions. [2024-06-14 13:33:15,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 595 transitions, 9883 flow [2024-06-14 13:33:18,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 595 transitions, 9401 flow, removed 173 selfloop flow, removed 6 redundant places. [2024-06-14 13:33:18,694 INFO L231 Difference]: Finished difference. Result has 430 places, 572 transitions, 8145 flow [2024-06-14 13:33:18,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7009, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8145, PETRI_PLACES=430, PETRI_TRANSITIONS=572} [2024-06-14 13:33:18,694 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 387 predicate places. [2024-06-14 13:33:18,695 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 572 transitions, 8145 flow [2024-06-14 13:33:18,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:18,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:33:18,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:33:18,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 13:33:18,695 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:33:18,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:33:18,696 INFO L85 PathProgramCache]: Analyzing trace with hash 661517450, now seen corresponding path program 7 times [2024-06-14 13:33:18,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:33:18,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210832518] [2024-06-14 13:33:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:33:18,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:33:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:33:19,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:33:19,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:33:19,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210832518] [2024-06-14 13:33:19,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210832518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:33:19,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:33:19,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:33:19,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353213105] [2024-06-14 13:33:19,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:33:19,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:33:19,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:33:19,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:33:19,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:33:19,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:33:19,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 572 transitions, 8145 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:19,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:33:19,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:33:19,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:33:21,275 INFO L124 PetriNetUnfolderBase]: 4178/6689 cut-off events. [2024-06-14 13:33:21,275 INFO L125 PetriNetUnfolderBase]: For 974016/974016 co-relation queries the response was YES. [2024-06-14 13:33:21,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60234 conditions, 6689 events. 4178/6689 cut-off events. For 974016/974016 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 42953 event pairs, 757 based on Foata normal form. 4/6687 useless extension candidates. Maximal degree in co-relation 60038. Up to 5598 conditions per place. [2024-06-14 13:33:21,389 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 416 selfloop transitions, 193 changer transitions 0/614 dead transitions. [2024-06-14 13:33:21,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 614 transitions, 10409 flow [2024-06-14 13:33:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:33:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:33:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-14 13:33:21,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708994708994709 [2024-06-14 13:33:21,390 INFO L175 Difference]: Start difference. First operand has 430 places, 572 transitions, 8145 flow. Second operand 9 states and 178 transitions. [2024-06-14 13:33:21,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 614 transitions, 10409 flow [2024-06-14 13:33:24,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 614 transitions, 10258 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-06-14 13:33:24,915 INFO L231 Difference]: Finished difference. Result has 437 places, 581 transitions, 8753 flow [2024-06-14 13:33:24,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8054, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8753, PETRI_PLACES=437, PETRI_TRANSITIONS=581} [2024-06-14 13:33:24,916 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 394 predicate places. [2024-06-14 13:33:24,916 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 581 transitions, 8753 flow [2024-06-14 13:33:24,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:24,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:33:24,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:33:24,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 13:33:24,916 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:33:24,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:33:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1299845867, now seen corresponding path program 6 times [2024-06-14 13:33:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:33:24,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086272547] [2024-06-14 13:33:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:33:24,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:33:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:33:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:33:25,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:33:25,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086272547] [2024-06-14 13:33:25,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086272547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:33:25,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:33:25,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:33:25,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887413386] [2024-06-14 13:33:25,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:33:25,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:33:25,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:33:25,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:33:25,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:33:25,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:33:25,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 581 transitions, 8753 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:25,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:33:25,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:33:25,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:33:27,683 INFO L124 PetriNetUnfolderBase]: 4175/6687 cut-off events. [2024-06-14 13:33:27,683 INFO L125 PetriNetUnfolderBase]: For 965085/965085 co-relation queries the response was YES. [2024-06-14 13:33:27,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60819 conditions, 6687 events. 4175/6687 cut-off events. For 965085/965085 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 43010 event pairs, 785 based on Foata normal form. 1/6682 useless extension candidates. Maximal degree in co-relation 60621. Up to 6261 conditions per place. [2024-06-14 13:33:27,799 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 517 selfloop transitions, 88 changer transitions 0/610 dead transitions. [2024-06-14 13:33:27,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 610 transitions, 10332 flow [2024-06-14 13:33:27,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:33:27,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:33:27,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 13:33:27,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-14 13:33:27,800 INFO L175 Difference]: Start difference. First operand has 437 places, 581 transitions, 8753 flow. Second operand 9 states and 169 transitions. [2024-06-14 13:33:27,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 610 transitions, 10332 flow [2024-06-14 13:33:31,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 610 transitions, 10029 flow, removed 96 selfloop flow, removed 4 redundant places. [2024-06-14 13:33:31,722 INFO L231 Difference]: Finished difference. Result has 443 places, 585 transitions, 8708 flow [2024-06-14 13:33:31,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8464, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8708, PETRI_PLACES=443, PETRI_TRANSITIONS=585} [2024-06-14 13:33:31,722 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 400 predicate places. [2024-06-14 13:33:31,722 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 585 transitions, 8708 flow [2024-06-14 13:33:31,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:31,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:33:31,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:33:31,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 13:33:31,723 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:33:31,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:33:31,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1045598925, now seen corresponding path program 7 times [2024-06-14 13:33:31,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:33:31,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992407613] [2024-06-14 13:33:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:33:31,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:33:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:33:32,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:33:32,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:33:32,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992407613] [2024-06-14 13:33:32,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992407613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:33:32,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:33:32,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:33:32,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350052076] [2024-06-14 13:33:32,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:33:32,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:33:32,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:33:32,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:33:32,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:33:32,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:33:32,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 585 transitions, 8708 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:32,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:33:32,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:33:32,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:33:34,496 INFO L124 PetriNetUnfolderBase]: 4211/6739 cut-off events. [2024-06-14 13:33:34,497 INFO L125 PetriNetUnfolderBase]: For 995136/995136 co-relation queries the response was YES. [2024-06-14 13:33:34,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61446 conditions, 6739 events. 4211/6739 cut-off events. For 995136/995136 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 43361 event pairs, 787 based on Foata normal form. 2/6735 useless extension candidates. Maximal degree in co-relation 61245. Up to 6159 conditions per place. [2024-06-14 13:33:34,613 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 449 selfloop transitions, 174 changer transitions 0/628 dead transitions. [2024-06-14 13:33:34,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 628 transitions, 10644 flow [2024-06-14 13:33:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:33:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:33:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-14 13:33:34,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-14 13:33:34,614 INFO L175 Difference]: Start difference. First operand has 443 places, 585 transitions, 8708 flow. Second operand 10 states and 182 transitions. [2024-06-14 13:33:34,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 628 transitions, 10644 flow [2024-06-14 13:33:38,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 628 transitions, 10435 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-14 13:33:38,491 INFO L231 Difference]: Finished difference. Result has 449 places, 604 transitions, 9290 flow [2024-06-14 13:33:38,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8516, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9290, PETRI_PLACES=449, PETRI_TRANSITIONS=604} [2024-06-14 13:33:38,491 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 406 predicate places. [2024-06-14 13:33:38,491 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 604 transitions, 9290 flow [2024-06-14 13:33:38,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:38,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:33:38,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:33:38,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 13:33:38,492 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:33:38,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:33:38,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1299936077, now seen corresponding path program 8 times [2024-06-14 13:33:38,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:33:38,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346532950] [2024-06-14 13:33:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:33:38,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:33:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:33:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:33:39,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:33:39,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346532950] [2024-06-14 13:33:39,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346532950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:33:39,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:33:39,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:33:39,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969118092] [2024-06-14 13:33:39,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:33:39,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:33:39,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:33:39,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:33:39,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:33:39,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:33:39,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 604 transitions, 9290 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:39,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:33:39,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:33:39,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:33:41,331 INFO L124 PetriNetUnfolderBase]: 4205/6733 cut-off events. [2024-06-14 13:33:41,332 INFO L125 PetriNetUnfolderBase]: For 996888/996888 co-relation queries the response was YES. [2024-06-14 13:33:41,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61444 conditions, 6733 events. 4205/6733 cut-off events. For 996888/996888 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 43347 event pairs, 783 based on Foata normal form. 2/6729 useless extension candidates. Maximal degree in co-relation 61242. Up to 6176 conditions per place. [2024-06-14 13:33:41,456 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 479 selfloop transitions, 142 changer transitions 0/626 dead transitions. [2024-06-14 13:33:41,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 626 transitions, 10604 flow [2024-06-14 13:33:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:33:41,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:33:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 13:33:41,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-14 13:33:41,457 INFO L175 Difference]: Start difference. First operand has 449 places, 604 transitions, 9290 flow. Second operand 9 states and 169 transitions. [2024-06-14 13:33:41,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 626 transitions, 10604 flow [2024-06-14 13:33:45,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 626 transitions, 10105 flow, removed 94 selfloop flow, removed 7 redundant places. [2024-06-14 13:33:45,398 INFO L231 Difference]: Finished difference. Result has 451 places, 604 transitions, 9085 flow [2024-06-14 13:33:45,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8791, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9085, PETRI_PLACES=451, PETRI_TRANSITIONS=604} [2024-06-14 13:33:45,399 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 408 predicate places. [2024-06-14 13:33:45,399 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 604 transitions, 9085 flow [2024-06-14 13:33:45,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:45,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:33:45,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:33:45,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 13:33:45,400 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:33:45,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:33:45,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1299936232, now seen corresponding path program 8 times [2024-06-14 13:33:45,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:33:45,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889511307] [2024-06-14 13:33:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:33:45,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:33:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:33:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:33:46,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:33:46,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889511307] [2024-06-14 13:33:46,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889511307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:33:46,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:33:46,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:33:46,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868478253] [2024-06-14 13:33:46,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:33:46,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:33:46,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:33:46,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:33:46,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:33:46,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:33:46,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 604 transitions, 9085 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:46,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:33:46,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:33:46,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:33:47,950 INFO L124 PetriNetUnfolderBase]: 4225/6759 cut-off events. [2024-06-14 13:33:47,950 INFO L125 PetriNetUnfolderBase]: For 1027379/1027379 co-relation queries the response was YES. [2024-06-14 13:33:48,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61714 conditions, 6759 events. 4225/6759 cut-off events. For 1027379/1027379 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 43493 event pairs, 769 based on Foata normal form. 4/6757 useless extension candidates. Maximal degree in co-relation 61511. Up to 5652 conditions per place. [2024-06-14 13:33:48,071 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 452 selfloop transitions, 183 changer transitions 0/640 dead transitions. [2024-06-14 13:33:48,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 640 transitions, 11385 flow [2024-06-14 13:33:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:33:48,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:33:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-14 13:33:48,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-14 13:33:48,072 INFO L175 Difference]: Start difference. First operand has 451 places, 604 transitions, 9085 flow. Second operand 9 states and 180 transitions. [2024-06-14 13:33:48,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 640 transitions, 11385 flow [2024-06-14 13:33:52,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 640 transitions, 11099 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 13:33:52,441 INFO L231 Difference]: Finished difference. Result has 453 places, 607 transitions, 9266 flow [2024-06-14 13:33:52,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8799, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9266, PETRI_PLACES=453, PETRI_TRANSITIONS=607} [2024-06-14 13:33:52,442 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 410 predicate places. [2024-06-14 13:33:52,442 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 607 transitions, 9266 flow [2024-06-14 13:33:52,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:52,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:33:52,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:33:52,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 13:33:52,442 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:33:52,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:33:52,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1303660882, now seen corresponding path program 9 times [2024-06-14 13:33:52,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:33:52,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018267905] [2024-06-14 13:33:52,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:33:52,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:33:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:33:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:33:53,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:33:53,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018267905] [2024-06-14 13:33:53,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018267905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:33:53,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:33:53,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:33:53,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428808834] [2024-06-14 13:33:53,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:33:53,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:33:53,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:33:53,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:33:53,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:33:53,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:33:53,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 607 transitions, 9266 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:53,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:33:53,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:33:53,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:33:55,324 INFO L124 PetriNetUnfolderBase]: 4277/6849 cut-off events. [2024-06-14 13:33:55,324 INFO L125 PetriNetUnfolderBase]: For 1078041/1078041 co-relation queries the response was YES. [2024-06-14 13:33:55,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63631 conditions, 6849 events. 4277/6849 cut-off events. For 1078041/1078041 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 44266 event pairs, 757 based on Foata normal form. 4/6847 useless extension candidates. Maximal degree in co-relation 63427. Up to 6198 conditions per place. [2024-06-14 13:33:55,447 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 527 selfloop transitions, 114 changer transitions 0/646 dead transitions. [2024-06-14 13:33:55,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 646 transitions, 11246 flow [2024-06-14 13:33:55,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:33:55,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:33:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-14 13:33:55,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43722943722943725 [2024-06-14 13:33:55,448 INFO L175 Difference]: Start difference. First operand has 453 places, 607 transitions, 9266 flow. Second operand 11 states and 202 transitions. [2024-06-14 13:33:55,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 646 transitions, 11246 flow [2024-06-14 13:33:59,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 646 transitions, 10635 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-06-14 13:33:59,626 INFO L231 Difference]: Finished difference. Result has 457 places, 613 transitions, 9095 flow [2024-06-14 13:33:59,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8719, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9095, PETRI_PLACES=457, PETRI_TRANSITIONS=613} [2024-06-14 13:33:59,627 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 414 predicate places. [2024-06-14 13:33:59,627 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 613 transitions, 9095 flow [2024-06-14 13:33:59,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:33:59,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:33:59,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:33:59,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 13:33:59,628 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:33:59,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:33:59,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1303655147, now seen corresponding path program 9 times [2024-06-14 13:33:59,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:33:59,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093803960] [2024-06-14 13:33:59,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:33:59,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:33:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:00,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:00,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093803960] [2024-06-14 13:34:00,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093803960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:00,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:00,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:00,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902255607] [2024-06-14 13:34:00,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:00,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:00,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:00,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:00,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:00,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:34:00,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 613 transitions, 9095 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:00,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:00,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:34:00,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:02,611 INFO L124 PetriNetUnfolderBase]: 4287/6861 cut-off events. [2024-06-14 13:34:02,611 INFO L125 PetriNetUnfolderBase]: For 1073264/1073264 co-relation queries the response was YES. [2024-06-14 13:34:02,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63087 conditions, 6861 events. 4287/6861 cut-off events. For 1073264/1073264 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 44304 event pairs, 807 based on Foata normal form. 2/6857 useless extension candidates. Maximal degree in co-relation 62882. Up to 6466 conditions per place. [2024-06-14 13:34:02,742 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 561 selfloop transitions, 73 changer transitions 0/639 dead transitions. [2024-06-14 13:34:02,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 639 transitions, 10594 flow [2024-06-14 13:34:02,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:02,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-14 13:34:02,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-14 13:34:02,743 INFO L175 Difference]: Start difference. First operand has 457 places, 613 transitions, 9095 flow. Second operand 9 states and 163 transitions. [2024-06-14 13:34:02,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 639 transitions, 10594 flow [2024-06-14 13:34:06,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 639 transitions, 10393 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-14 13:34:06,911 INFO L231 Difference]: Finished difference. Result has 459 places, 619 transitions, 9221 flow [2024-06-14 13:34:06,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8894, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9221, PETRI_PLACES=459, PETRI_TRANSITIONS=619} [2024-06-14 13:34:06,911 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 416 predicate places. [2024-06-14 13:34:06,911 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 619 transitions, 9221 flow [2024-06-14 13:34:06,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:06,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:06,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:06,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 13:34:06,912 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:34:06,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:06,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1045302410, now seen corresponding path program 10 times [2024-06-14 13:34:06,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:06,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86991653] [2024-06-14 13:34:06,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:06,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:07,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:07,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86991653] [2024-06-14 13:34:07,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86991653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:07,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:07,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:07,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588777049] [2024-06-14 13:34:07,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:07,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:07,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:07,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:07,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:07,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:34:07,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 619 transitions, 9221 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:07,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:07,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:34:07,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:09,724 INFO L124 PetriNetUnfolderBase]: 4339/6933 cut-off events. [2024-06-14 13:34:09,724 INFO L125 PetriNetUnfolderBase]: For 1132185/1132185 co-relation queries the response was YES. [2024-06-14 13:34:09,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64362 conditions, 6933 events. 4339/6933 cut-off events. For 1132185/1132185 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 44777 event pairs, 749 based on Foata normal form. 4/6931 useless extension candidates. Maximal degree in co-relation 64155. Up to 5746 conditions per place. [2024-06-14 13:34:09,851 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 444 selfloop transitions, 210 changer transitions 0/659 dead transitions. [2024-06-14 13:34:09,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 659 transitions, 11419 flow [2024-06-14 13:34:09,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-14 13:34:09,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-14 13:34:09,852 INFO L175 Difference]: Start difference. First operand has 459 places, 619 transitions, 9221 flow. Second operand 9 states and 177 transitions. [2024-06-14 13:34:09,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 659 transitions, 11419 flow [2024-06-14 13:34:14,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 659 transitions, 11178 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-14 13:34:14,624 INFO L231 Difference]: Finished difference. Result has 462 places, 625 transitions, 9539 flow [2024-06-14 13:34:14,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8980, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9539, PETRI_PLACES=462, PETRI_TRANSITIONS=625} [2024-06-14 13:34:14,625 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 419 predicate places. [2024-06-14 13:34:14,625 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 625 transitions, 9539 flow [2024-06-14 13:34:14,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:14,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:14,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:14,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 13:34:14,625 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:34:14,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:14,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1303655302, now seen corresponding path program 11 times [2024-06-14 13:34:14,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:14,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312704522] [2024-06-14 13:34:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:14,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:15,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:15,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:15,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312704522] [2024-06-14 13:34:15,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312704522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:15,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:15,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:15,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179839725] [2024-06-14 13:34:15,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:15,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:15,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:15,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:15,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:15,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:34:15,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 625 transitions, 9539 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:15,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:15,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:34:15,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:17,527 INFO L124 PetriNetUnfolderBase]: 4327/6931 cut-off events. [2024-06-14 13:34:17,527 INFO L125 PetriNetUnfolderBase]: For 1121665/1121665 co-relation queries the response was YES. [2024-06-14 13:34:17,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64422 conditions, 6931 events. 4327/6931 cut-off events. For 1121665/1121665 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 44887 event pairs, 759 based on Foata normal form. 4/6929 useless extension candidates. Maximal degree in co-relation 64214. Up to 6276 conditions per place. [2024-06-14 13:34:17,650 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 538 selfloop transitions, 112 changer transitions 0/655 dead transitions. [2024-06-14 13:34:17,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 655 transitions, 11091 flow [2024-06-14 13:34:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-14 13:34:17,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-14 13:34:17,651 INFO L175 Difference]: Start difference. First operand has 462 places, 625 transitions, 9539 flow. Second operand 9 states and 173 transitions. [2024-06-14 13:34:17,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 655 transitions, 11091 flow [2024-06-14 13:34:22,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 655 transitions, 10701 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-14 13:34:22,715 INFO L231 Difference]: Finished difference. Result has 466 places, 625 transitions, 9380 flow [2024-06-14 13:34:22,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9149, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9380, PETRI_PLACES=466, PETRI_TRANSITIONS=625} [2024-06-14 13:34:22,716 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 423 predicate places. [2024-06-14 13:34:22,716 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 625 transitions, 9380 flow [2024-06-14 13:34:22,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:22,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:22,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:22,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 13:34:22,716 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:34:22,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:22,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1045747880, now seen corresponding path program 12 times [2024-06-14 13:34:22,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:22,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956427540] [2024-06-14 13:34:22,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:22,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:23,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956427540] [2024-06-14 13:34:23,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956427540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:23,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:23,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:23,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620505383] [2024-06-14 13:34:23,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:23,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:23,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:23,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:23,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:23,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:34:23,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 625 transitions, 9380 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:23,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:23,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:34:23,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:25,586 INFO L124 PetriNetUnfolderBase]: 4315/6910 cut-off events. [2024-06-14 13:34:25,586 INFO L125 PetriNetUnfolderBase]: For 1103774/1103774 co-relation queries the response was YES. [2024-06-14 13:34:25,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63404 conditions, 6910 events. 4315/6910 cut-off events. For 1103774/1103774 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 44776 event pairs, 945 based on Foata normal form. 4/6912 useless extension candidates. Maximal degree in co-relation 63195. Up to 6544 conditions per place. [2024-06-14 13:34:25,718 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 596 selfloop transitions, 46 changer transitions 0/647 dead transitions. [2024-06-14 13:34:25,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 647 transitions, 10766 flow [2024-06-14 13:34:25,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:25,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:25,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-14 13:34:25,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-06-14 13:34:25,719 INFO L175 Difference]: Start difference. First operand has 466 places, 625 transitions, 9380 flow. Second operand 9 states and 164 transitions. [2024-06-14 13:34:25,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 647 transitions, 10766 flow [2024-06-14 13:34:30,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 647 transitions, 10500 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 13:34:30,778 INFO L231 Difference]: Finished difference. Result has 467 places, 625 transitions, 9212 flow [2024-06-14 13:34:30,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9114, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9212, PETRI_PLACES=467, PETRI_TRANSITIONS=625} [2024-06-14 13:34:30,778 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 424 predicate places. [2024-06-14 13:34:30,778 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 625 transitions, 9212 flow [2024-06-14 13:34:30,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:30,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:30,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:30,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 13:34:30,779 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:34:30,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:30,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1914746044, now seen corresponding path program 13 times [2024-06-14 13:34:30,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:30,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073239317] [2024-06-14 13:34:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:30,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:31,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:31,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073239317] [2024-06-14 13:34:31,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073239317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:31,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:31,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:31,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595555692] [2024-06-14 13:34:31,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:31,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:31,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:31,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:31,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:31,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:34:31,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 625 transitions, 9212 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:31,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:31,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:34:31,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:33,606 INFO L124 PetriNetUnfolderBase]: 4345/6948 cut-off events. [2024-06-14 13:34:33,606 INFO L125 PetriNetUnfolderBase]: For 1119219/1119219 co-relation queries the response was YES. [2024-06-14 13:34:33,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63543 conditions, 6948 events. 4345/6948 cut-off events. For 1119219/1119219 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 44976 event pairs, 961 based on Foata normal form. 4/6950 useless extension candidates. Maximal degree in co-relation 63333. Up to 6617 conditions per place. [2024-06-14 13:34:33,743 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 609 selfloop transitions, 37 changer transitions 0/651 dead transitions. [2024-06-14 13:34:33,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 651 transitions, 10710 flow [2024-06-14 13:34:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:33,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:33,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-14 13:34:33,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 13:34:33,744 INFO L175 Difference]: Start difference. First operand has 467 places, 625 transitions, 9212 flow. Second operand 9 states and 162 transitions. [2024-06-14 13:34:33,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 651 transitions, 10710 flow [2024-06-14 13:34:38,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 651 transitions, 10489 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 13:34:38,450 INFO L231 Difference]: Finished difference. Result has 467 places, 631 transitions, 9185 flow [2024-06-14 13:34:38,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8997, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9185, PETRI_PLACES=467, PETRI_TRANSITIONS=631} [2024-06-14 13:34:38,450 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 424 predicate places. [2024-06-14 13:34:38,450 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 631 transitions, 9185 flow [2024-06-14 13:34:38,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:38,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:38,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:38,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 13:34:38,451 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:34:38,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:38,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1144103086, now seen corresponding path program 14 times [2024-06-14 13:34:38,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:38,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286007978] [2024-06-14 13:34:38,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:38,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:39,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286007978] [2024-06-14 13:34:39,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286007978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:39,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:39,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:39,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127466896] [2024-06-14 13:34:39,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:39,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:39,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:39,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:39,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:39,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:34:39,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 631 transitions, 9185 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:39,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:39,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:34:39,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:41,297 INFO L124 PetriNetUnfolderBase]: 4429/7079 cut-off events. [2024-06-14 13:34:41,297 INFO L125 PetriNetUnfolderBase]: For 1203424/1203424 co-relation queries the response was YES. [2024-06-14 13:34:41,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65834 conditions, 7079 events. 4429/7079 cut-off events. For 1203424/1203424 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 45930 event pairs, 755 based on Foata normal form. 4/7077 useless extension candidates. Maximal degree in co-relation 65623. Up to 6247 conditions per place. [2024-06-14 13:34:41,431 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 523 selfloop transitions, 144 changer transitions 0/672 dead transitions. [2024-06-14 13:34:41,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 672 transitions, 11522 flow [2024-06-14 13:34:41,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:41,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-14 13:34:41,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-14 13:34:41,432 INFO L175 Difference]: Start difference. First operand has 467 places, 631 transitions, 9185 flow. Second operand 9 states and 173 transitions. [2024-06-14 13:34:41,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 672 transitions, 11522 flow [2024-06-14 13:34:46,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 672 transitions, 11394 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-14 13:34:46,555 INFO L231 Difference]: Finished difference. Result has 471 places, 640 transitions, 9635 flow [2024-06-14 13:34:46,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9057, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9635, PETRI_PLACES=471, PETRI_TRANSITIONS=640} [2024-06-14 13:34:46,556 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 428 predicate places. [2024-06-14 13:34:46,556 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 640 transitions, 9635 flow [2024-06-14 13:34:46,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:46,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:46,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:46,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 13:34:46,557 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:34:46,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:46,557 INFO L85 PathProgramCache]: Analyzing trace with hash 316092754, now seen corresponding path program 15 times [2024-06-14 13:34:46,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:46,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464676726] [2024-06-14 13:34:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:46,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:47,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:47,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464676726] [2024-06-14 13:34:47,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464676726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:47,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:47,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:47,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686687547] [2024-06-14 13:34:47,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:47,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:47,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:47,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:47,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:47,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:34:47,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 640 transitions, 9635 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:47,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:47,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:34:47,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:49,568 INFO L124 PetriNetUnfolderBase]: 4481/7161 cut-off events. [2024-06-14 13:34:49,568 INFO L125 PetriNetUnfolderBase]: For 1257310/1257310 co-relation queries the response was YES. [2024-06-14 13:34:49,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67827 conditions, 7161 events. 4481/7161 cut-off events. For 1257310/1257310 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 46554 event pairs, 761 based on Foata normal form. 4/7159 useless extension candidates. Maximal degree in co-relation 67614. Up to 6287 conditions per place. [2024-06-14 13:34:49,699 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 528 selfloop transitions, 156 changer transitions 0/689 dead transitions. [2024-06-14 13:34:49,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 689 transitions, 12087 flow [2024-06-14 13:34:49,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 13:34:49,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 13:34:49,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-06-14 13:34:49,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-14 13:34:49,700 INFO L175 Difference]: Start difference. First operand has 471 places, 640 transitions, 9635 flow. Second operand 12 states and 222 transitions. [2024-06-14 13:34:49,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 689 transitions, 12087 flow [2024-06-14 13:34:55,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 689 transitions, 11889 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-14 13:34:55,120 INFO L231 Difference]: Finished difference. Result has 479 places, 646 transitions, 9927 flow [2024-06-14 13:34:55,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9449, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9927, PETRI_PLACES=479, PETRI_TRANSITIONS=646} [2024-06-14 13:34:55,120 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 436 predicate places. [2024-06-14 13:34:55,120 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 646 transitions, 9927 flow [2024-06-14 13:34:55,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:55,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:55,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:55,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 13:34:55,121 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:34:55,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:55,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1144102931, now seen corresponding path program 10 times [2024-06-14 13:34:55,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:55,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753891971] [2024-06-14 13:34:55,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:55,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:56,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:56,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753891971] [2024-06-14 13:34:56,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753891971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:56,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:56,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:56,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574947627] [2024-06-14 13:34:56,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:56,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:56,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:56,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:56,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:56,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:34:56,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 646 transitions, 9927 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:56,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:56,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:34:56,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:58,275 INFO L124 PetriNetUnfolderBase]: 4491/7171 cut-off events. [2024-06-14 13:34:58,276 INFO L125 PetriNetUnfolderBase]: For 1258801/1258801 co-relation queries the response was YES. [2024-06-14 13:34:58,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68456 conditions, 7171 events. 4491/7171 cut-off events. For 1258801/1258801 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 46589 event pairs, 845 based on Foata normal form. 2/7167 useless extension candidates. Maximal degree in co-relation 68241. Up to 6725 conditions per place. [2024-06-14 13:34:58,412 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 576 selfloop transitions, 91 changer transitions 0/672 dead transitions. [2024-06-14 13:34:58,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 672 transitions, 11490 flow [2024-06-14 13:34:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-14 13:34:58,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-14 13:34:58,413 INFO L175 Difference]: Start difference. First operand has 479 places, 646 transitions, 9927 flow. Second operand 9 states and 161 transitions. [2024-06-14 13:34:58,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 672 transitions, 11490 flow [2024-06-14 13:35:04,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 672 transitions, 11141 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-14 13:35:04,106 INFO L231 Difference]: Finished difference. Result has 480 places, 652 transitions, 9923 flow [2024-06-14 13:35:04,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9578, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9923, PETRI_PLACES=480, PETRI_TRANSITIONS=652} [2024-06-14 13:35:04,107 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 437 predicate places. [2024-06-14 13:35:04,107 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 652 transitions, 9923 flow [2024-06-14 13:35:04,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:35:04,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:35:04,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:35:04,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 13:35:04,108 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:35:04,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:35:04,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1144399601, now seen corresponding path program 11 times [2024-06-14 13:35:04,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:35:04,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45695365] [2024-06-14 13:35:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:35:04,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:35:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:35:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:35:04,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:35:04,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45695365] [2024-06-14 13:35:04,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45695365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:35:04,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:35:04,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:35:04,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657768326] [2024-06-14 13:35:04,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:35:04,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:35:04,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:35:04,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:35:04,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:35:05,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:35:05,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 652 transitions, 9923 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:35:05,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:35:05,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:35:05,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:35:07,143 INFO L124 PetriNetUnfolderBase]: 4504/7189 cut-off events. [2024-06-14 13:35:07,143 INFO L125 PetriNetUnfolderBase]: For 1274545/1274545 co-relation queries the response was YES. [2024-06-14 13:35:07,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68388 conditions, 7189 events. 4504/7189 cut-off events. For 1274545/1274545 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 46685 event pairs, 847 based on Foata normal form. 1/7184 useless extension candidates. Maximal degree in co-relation 68172. Up to 6788 conditions per place. [2024-06-14 13:35:07,292 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 600 selfloop transitions, 75 changer transitions 0/680 dead transitions. [2024-06-14 13:35:07,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 680 transitions, 11803 flow [2024-06-14 13:35:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:35:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:35:07,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-14 13:35:07,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-14 13:35:07,293 INFO L175 Difference]: Start difference. First operand has 480 places, 652 transitions, 9923 flow. Second operand 9 states and 158 transitions. [2024-06-14 13:35:07,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 680 transitions, 11803 flow [2024-06-14 13:35:13,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 680 transitions, 11531 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-14 13:35:13,079 INFO L231 Difference]: Finished difference. Result has 484 places, 664 transitions, 10090 flow [2024-06-14 13:35:13,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9651, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10090, PETRI_PLACES=484, PETRI_TRANSITIONS=664} [2024-06-14 13:35:13,080 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 441 predicate places. [2024-06-14 13:35:13,080 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 664 transitions, 10090 flow [2024-06-14 13:35:13,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:35:13,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:35:13,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:35:13,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 13:35:13,080 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:35:13,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:35:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1149644026, now seen corresponding path program 16 times [2024-06-14 13:35:13,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:35:13,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625599335] [2024-06-14 13:35:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:35:13,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:35:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:35:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:35:13,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:35:13,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625599335] [2024-06-14 13:35:13,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625599335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:35:13,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:35:13,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:35:13,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334043025] [2024-06-14 13:35:13,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:35:13,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:35:13,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:35:13,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:35:13,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:35:13,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:35:13,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 664 transitions, 10090 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:35:13,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:35:13,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:35:13,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:35:16,267 INFO L124 PetriNetUnfolderBase]: 4492/7182 cut-off events. [2024-06-14 13:35:16,267 INFO L125 PetriNetUnfolderBase]: For 1282782/1282782 co-relation queries the response was YES. [2024-06-14 13:35:16,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67839 conditions, 7182 events. 4492/7182 cut-off events. For 1282782/1282782 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 46738 event pairs, 983 based on Foata normal form. 4/7184 useless extension candidates. Maximal degree in co-relation 67620. Up to 6761 conditions per place. [2024-06-14 13:35:16,385 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 636 selfloop transitions, 47 changer transitions 0/688 dead transitions. [2024-06-14 13:35:16,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 688 transitions, 11850 flow [2024-06-14 13:35:16,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:35:16,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:35:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-14 13:35:16,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134199134199134 [2024-06-14 13:35:16,386 INFO L175 Difference]: Start difference. First operand has 484 places, 664 transitions, 10090 flow. Second operand 11 states and 191 transitions. [2024-06-14 13:35:16,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 688 transitions, 11850 flow [2024-06-14 13:35:21,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 688 transitions, 11675 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-14 13:35:21,684 INFO L231 Difference]: Finished difference. Result has 491 places, 664 transitions, 10015 flow [2024-06-14 13:35:21,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9915, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10015, PETRI_PLACES=491, PETRI_TRANSITIONS=664} [2024-06-14 13:35:21,685 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 448 predicate places. [2024-06-14 13:35:21,685 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 664 transitions, 10015 flow [2024-06-14 13:35:21,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:35:21,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:35:21,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:35:21,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 13:35:21,685 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:35:21,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:35:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash 330169234, now seen corresponding path program 17 times [2024-06-14 13:35:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:35:21,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816665781] [2024-06-14 13:35:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:35:21,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:35:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:35:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:35:22,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:35:22,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816665781] [2024-06-14 13:35:22,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816665781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:35:22,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:35:22,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:35:22,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222147360] [2024-06-14 13:35:22,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:35:22,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:35:22,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:35:22,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:35:22,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:35:22,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:35:22,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 664 transitions, 10015 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:35:22,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:35:22,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:35:22,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:35:24,841 INFO L124 PetriNetUnfolderBase]: 4480/7166 cut-off events. [2024-06-14 13:35:24,841 INFO L125 PetriNetUnfolderBase]: For 1265650/1265650 co-relation queries the response was YES. [2024-06-14 13:35:24,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67234 conditions, 7166 events. 4480/7166 cut-off events. For 1265650/1265650 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 46699 event pairs, 975 based on Foata normal form. 4/7168 useless extension candidates. Maximal degree in co-relation 67014. Up to 6753 conditions per place. [2024-06-14 13:35:24,971 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 640 selfloop transitions, 47 changer transitions 0/692 dead transitions. [2024-06-14 13:35:24,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 692 transitions, 11567 flow [2024-06-14 13:35:24,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 13:35:24,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 13:35:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 221 transitions. [2024-06-14 13:35:24,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-14 13:35:24,972 INFO L175 Difference]: Start difference. First operand has 491 places, 664 transitions, 10015 flow. Second operand 13 states and 221 transitions. [2024-06-14 13:35:24,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 692 transitions, 11567 flow [2024-06-14 13:35:31,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 692 transitions, 11356 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-14 13:35:31,035 INFO L231 Difference]: Finished difference. Result has 496 places, 664 transitions, 9904 flow [2024-06-14 13:35:31,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9804, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9904, PETRI_PLACES=496, PETRI_TRANSITIONS=664} [2024-06-14 13:35:31,035 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 453 predicate places. [2024-06-14 13:35:31,035 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 664 transitions, 9904 flow [2024-06-14 13:35:31,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:35:31,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:35:31,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:35:31,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 13:35:31,036 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:35:31,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:35:31,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1135828721, now seen corresponding path program 12 times [2024-06-14 13:35:31,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:35:31,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440858136] [2024-06-14 13:35:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:35:31,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:35:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:35:32,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:35:32,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:35:32,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440858136] [2024-06-14 13:35:32,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440858136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:35:32,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:35:32,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:35:32,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016450029] [2024-06-14 13:35:32,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:35:32,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:35:32,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:35:32,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:35:32,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:35:32,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:35:32,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 664 transitions, 9904 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:35:32,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:35:32,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:35:32,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:35:34,221 INFO L124 PetriNetUnfolderBase]: 4482/7176 cut-off events. [2024-06-14 13:35:34,221 INFO L125 PetriNetUnfolderBase]: For 1256207/1256207 co-relation queries the response was YES. [2024-06-14 13:35:34,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67021 conditions, 7176 events. 4482/7176 cut-off events. For 1256207/1256207 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 46748 event pairs, 855 based on Foata normal form. 2/7172 useless extension candidates. Maximal degree in co-relation 66800. Up to 6714 conditions per place. [2024-06-14 13:35:34,360 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 589 selfloop transitions, 92 changer transitions 0/686 dead transitions. [2024-06-14 13:35:34,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 686 transitions, 11421 flow [2024-06-14 13:35:34,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:35:34,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:35:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-14 13:35:34,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134199134199134 [2024-06-14 13:35:34,361 INFO L175 Difference]: Start difference. First operand has 496 places, 664 transitions, 9904 flow. Second operand 11 states and 191 transitions. [2024-06-14 13:35:34,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 686 transitions, 11421 flow [2024-06-14 13:35:40,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 686 transitions, 11243 flow, removed 27 selfloop flow, removed 13 redundant places. [2024-06-14 13:35:40,550 INFO L231 Difference]: Finished difference. Result has 494 places, 667 transitions, 10017 flow [2024-06-14 13:35:40,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9726, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10017, PETRI_PLACES=494, PETRI_TRANSITIONS=667} [2024-06-14 13:35:40,551 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 451 predicate places. [2024-06-14 13:35:40,551 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 667 transitions, 10017 flow [2024-06-14 13:35:40,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:35:40,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:35:40,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:35:40,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 13:35:40,551 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:35:40,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:35:40,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1135828876, now seen corresponding path program 18 times [2024-06-14 13:35:40,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:35:40,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667446532] [2024-06-14 13:35:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:35:40,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:35:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:35:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:35:41,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:35:41,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667446532] [2024-06-14 13:35:41,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667446532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:35:41,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:35:41,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:35:41,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885838854] [2024-06-14 13:35:41,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:35:41,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:35:41,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:35:41,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:35:41,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:35:41,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:35:41,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 667 transitions, 10017 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:35:41,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:35:41,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:35:41,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:35:43,451 INFO L124 PetriNetUnfolderBase]: 4470/7146 cut-off events. [2024-06-14 13:35:43,451 INFO L125 PetriNetUnfolderBase]: For 1256439/1256439 co-relation queries the response was YES. [2024-06-14 13:35:43,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66444 conditions, 7146 events. 4470/7146 cut-off events. For 1256439/1256439 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 46456 event pairs, 753 based on Foata normal form. 4/7144 useless extension candidates. Maximal degree in co-relation 66222. Up to 6298 conditions per place. [2024-06-14 13:35:43,583 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 543 selfloop transitions, 152 changer transitions 0/700 dead transitions. [2024-06-14 13:35:43,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 700 transitions, 11723 flow [2024-06-14 13:35:43,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:35:43,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:35:43,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-14 13:35:43,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44372294372294374 [2024-06-14 13:35:43,584 INFO L175 Difference]: Start difference. First operand has 494 places, 667 transitions, 10017 flow. Second operand 11 states and 205 transitions. [2024-06-14 13:35:43,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 700 transitions, 11723 flow [2024-06-14 13:35:49,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 700 transitions, 11434 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-14 13:35:49,215 INFO L231 Difference]: Finished difference. Result has 497 places, 667 transitions, 10039 flow [2024-06-14 13:35:49,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9728, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10039, PETRI_PLACES=497, PETRI_TRANSITIONS=667} [2024-06-14 13:35:49,215 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 454 predicate places. [2024-06-14 13:35:49,216 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 667 transitions, 10039 flow [2024-06-14 13:35:49,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:35:49,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:35:49,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:35:49,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 13:35:49,216 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:35:49,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:35:49,216 INFO L85 PathProgramCache]: Analyzing trace with hash 952043768, now seen corresponding path program 19 times [2024-06-14 13:35:49,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:35:49,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314705550] [2024-06-14 13:35:49,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:35:49,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:35:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:35:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:35:49,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:35:49,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314705550] [2024-06-14 13:35:49,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314705550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:35:49,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:35:49,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:35:49,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734347054] [2024-06-14 13:35:49,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:35:49,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:35:49,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:35:49,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:35:49,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:35:50,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:35:50,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 667 transitions, 10039 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:35:50,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:35:50,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:35:50,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:35:52,066 INFO L124 PetriNetUnfolderBase]: 4490/7187 cut-off events. [2024-06-14 13:35:52,067 INFO L125 PetriNetUnfolderBase]: For 1274734/1274734 co-relation queries the response was YES. [2024-06-14 13:35:52,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67118 conditions, 7187 events. 4490/7187 cut-off events. For 1274734/1274734 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 46815 event pairs, 825 based on Foata normal form. 4/7189 useless extension candidates. Maximal degree in co-relation 66895. Up to 6762 conditions per place. [2024-06-14 13:35:52,205 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 641 selfloop transitions, 51 changer transitions 0/697 dead transitions. [2024-06-14 13:35:52,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 697 transitions, 11669 flow [2024-06-14 13:35:52,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:35:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:35:52,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-14 13:35:52,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48639455782312924 [2024-06-14 13:35:52,206 INFO L175 Difference]: Start difference. First operand has 497 places, 667 transitions, 10039 flow. Second operand 7 states and 143 transitions. [2024-06-14 13:35:52,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 697 transitions, 11669 flow [2024-06-14 13:35:57,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 697 transitions, 11310 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-14 13:35:57,826 INFO L231 Difference]: Finished difference. Result has 493 places, 670 transitions, 9899 flow [2024-06-14 13:35:57,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9680, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9899, PETRI_PLACES=493, PETRI_TRANSITIONS=670} [2024-06-14 13:35:57,827 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 450 predicate places. [2024-06-14 13:35:57,827 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 670 transitions, 9899 flow [2024-06-14 13:35:57,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:35:57,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:35:57,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:35:57,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 13:35:57,827 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:35:57,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:35:57,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1616799066, now seen corresponding path program 20 times [2024-06-14 13:35:57,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:35:57,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434451880] [2024-06-14 13:35:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:35:57,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:35:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:35:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:35:58,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:35:58,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434451880] [2024-06-14 13:35:58,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434451880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:35:58,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:35:58,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:35:58,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030760429] [2024-06-14 13:35:58,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:35:58,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:35:58,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:35:58,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:35:58,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:35:58,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:35:58,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 670 transitions, 9899 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:35:58,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:35:58,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:35:58,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:00,752 INFO L124 PetriNetUnfolderBase]: 4520/7223 cut-off events. [2024-06-14 13:36:00,752 INFO L125 PetriNetUnfolderBase]: For 1292427/1292427 co-relation queries the response was YES. [2024-06-14 13:36:00,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67295 conditions, 7223 events. 4520/7223 cut-off events. For 1292427/1292427 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 47064 event pairs, 1023 based on Foata normal form. 4/7225 useless extension candidates. Maximal degree in co-relation 67071. Up to 6858 conditions per place. [2024-06-14 13:36:00,899 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 657 selfloop transitions, 35 changer transitions 0/697 dead transitions. [2024-06-14 13:36:00,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 697 transitions, 11509 flow [2024-06-14 13:36:00,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:36:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:36:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-14 13:36:00,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-14 13:36:00,900 INFO L175 Difference]: Start difference. First operand has 493 places, 670 transitions, 9899 flow. Second operand 8 states and 150 transitions. [2024-06-14 13:36:00,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 697 transitions, 11509 flow [2024-06-14 13:36:06,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 697 transitions, 11333 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-14 13:36:06,660 INFO L231 Difference]: Finished difference. Result has 494 places, 676 transitions, 9931 flow [2024-06-14 13:36:06,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9723, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9931, PETRI_PLACES=494, PETRI_TRANSITIONS=676} [2024-06-14 13:36:06,660 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 451 predicate places. [2024-06-14 13:36:06,661 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 676 transitions, 9931 flow [2024-06-14 13:36:06,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:06,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:06,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:06,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 13:36:06,661 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:36:06,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash 310339441, now seen corresponding path program 13 times [2024-06-14 13:36:06,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:06,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382354600] [2024-06-14 13:36:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:06,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:07,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382354600] [2024-06-14 13:36:07,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382354600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:07,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:07,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:36:07,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573369725] [2024-06-14 13:36:07,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:07,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:36:07,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:07,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:36:07,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:36:07,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:36:07,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 676 transitions, 9931 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:07,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:07,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:36:07,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:09,878 INFO L124 PetriNetUnfolderBase]: 4522/7221 cut-off events. [2024-06-14 13:36:09,878 INFO L125 PetriNetUnfolderBase]: For 1282914/1282914 co-relation queries the response was YES. [2024-06-14 13:36:09,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67168 conditions, 7221 events. 4522/7221 cut-off events. For 1282914/1282914 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 47015 event pairs, 839 based on Foata normal form. 2/7217 useless extension candidates. Maximal degree in co-relation 66945. Up to 6598 conditions per place. [2024-06-14 13:36:10,005 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 556 selfloop transitions, 149 changer transitions 0/710 dead transitions. [2024-06-14 13:36:10,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 710 transitions, 11826 flow [2024-06-14 13:36:10,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:36:10,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:36:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-14 13:36:10,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708994708994709 [2024-06-14 13:36:10,006 INFO L175 Difference]: Start difference. First operand has 494 places, 676 transitions, 9931 flow. Second operand 9 states and 178 transitions. [2024-06-14 13:36:10,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 710 transitions, 11826 flow [2024-06-14 13:36:15,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 710 transitions, 11608 flow, removed 77 selfloop flow, removed 5 redundant places. [2024-06-14 13:36:15,902 INFO L231 Difference]: Finished difference. Result has 499 places, 679 transitions, 10193 flow [2024-06-14 13:36:15,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9713, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10193, PETRI_PLACES=499, PETRI_TRANSITIONS=679} [2024-06-14 13:36:15,903 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 456 predicate places. [2024-06-14 13:36:15,903 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 679 transitions, 10193 flow [2024-06-14 13:36:15,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:15,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:15,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:15,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 13:36:15,903 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:36:15,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:15,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1735281252, now seen corresponding path program 21 times [2024-06-14 13:36:15,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:15,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175611032] [2024-06-14 13:36:15,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:15,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:16,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:16,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175611032] [2024-06-14 13:36:16,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175611032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:16,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:16,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:36:16,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94289534] [2024-06-14 13:36:16,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:16,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:36:16,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:16,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:36:16,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:36:16,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:36:16,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 679 transitions, 10193 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:16,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:16,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:36:16,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:18,879 INFO L124 PetriNetUnfolderBase]: 4584/7314 cut-off events. [2024-06-14 13:36:18,879 INFO L125 PetriNetUnfolderBase]: For 1358125/1358125 co-relation queries the response was YES. [2024-06-14 13:36:18,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69059 conditions, 7314 events. 4584/7314 cut-off events. For 1358125/1358125 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 47689 event pairs, 1015 based on Foata normal form. 4/7316 useless extension candidates. Maximal degree in co-relation 68834. Up to 6883 conditions per place. [2024-06-14 13:36:19,011 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 659 selfloop transitions, 44 changer transitions 0/708 dead transitions. [2024-06-14 13:36:19,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 708 transitions, 12210 flow [2024-06-14 13:36:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:36:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:36:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-14 13:36:19,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-14 13:36:19,012 INFO L175 Difference]: Start difference. First operand has 499 places, 679 transitions, 10193 flow. Second operand 8 states and 150 transitions. [2024-06-14 13:36:19,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 708 transitions, 12210 flow [2024-06-14 13:36:26,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 708 transitions, 11871 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 13:36:26,210 INFO L231 Difference]: Finished difference. Result has 500 places, 688 transitions, 10187 flow [2024-06-14 13:36:26,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9854, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10187, PETRI_PLACES=500, PETRI_TRANSITIONS=688} [2024-06-14 13:36:26,211 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 457 predicate places. [2024-06-14 13:36:26,211 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 688 transitions, 10187 flow [2024-06-14 13:36:26,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:26,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:26,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:26,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 13:36:26,212 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:36:26,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:26,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1616812086, now seen corresponding path program 22 times [2024-06-14 13:36:26,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:26,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129027997] [2024-06-14 13:36:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:26,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:26,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:26,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129027997] [2024-06-14 13:36:26,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129027997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:26,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:26,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:36:26,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969828726] [2024-06-14 13:36:26,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:26,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:36:26,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:26,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:36:26,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:36:27,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:36:27,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 688 transitions, 10187 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:27,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:27,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:36:27,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:29,056 INFO L124 PetriNetUnfolderBase]: 4604/7349 cut-off events. [2024-06-14 13:36:29,057 INFO L125 PetriNetUnfolderBase]: For 1376043/1376043 co-relation queries the response was YES. [2024-06-14 13:36:29,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69329 conditions, 7349 events. 4604/7349 cut-off events. For 1376043/1376043 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 47987 event pairs, 799 based on Foata normal form. 4/7347 useless extension candidates. Maximal degree in co-relation 69103. Up to 6411 conditions per place. [2024-06-14 13:36:29,194 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 563 selfloop transitions, 156 changer transitions 0/724 dead transitions. [2024-06-14 13:36:29,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 724 transitions, 12510 flow [2024-06-14 13:36:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:36:29,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:36:29,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-14 13:36:29,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-14 13:36:29,196 INFO L175 Difference]: Start difference. First operand has 500 places, 688 transitions, 10187 flow. Second operand 8 states and 163 transitions. [2024-06-14 13:36:29,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 724 transitions, 12510 flow [2024-06-14 13:36:35,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 724 transitions, 12372 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-14 13:36:35,692 INFO L231 Difference]: Finished difference. Result has 504 places, 691 transitions, 10461 flow [2024-06-14 13:36:35,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10049, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10461, PETRI_PLACES=504, PETRI_TRANSITIONS=691} [2024-06-14 13:36:35,692 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 461 predicate places. [2024-06-14 13:36:35,693 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 691 transitions, 10461 flow [2024-06-14 13:36:35,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:35,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:35,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:35,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 13:36:35,693 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:36:35,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:35,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1158697208, now seen corresponding path program 23 times [2024-06-14 13:36:35,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:35,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775857037] [2024-06-14 13:36:35,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:35,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:36,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:36,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775857037] [2024-06-14 13:36:36,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775857037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:36,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:36,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:36:36,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744267590] [2024-06-14 13:36:36,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:36,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:36:36,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:36,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:36:36,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:36:36,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:36:36,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 691 transitions, 10461 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:36,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:36,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:36:36,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:38,565 INFO L124 PetriNetUnfolderBase]: 4624/7390 cut-off events. [2024-06-14 13:36:38,565 INFO L125 PetriNetUnfolderBase]: For 1397891/1397891 co-relation queries the response was YES. [2024-06-14 13:36:38,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70082 conditions, 7390 events. 4624/7390 cut-off events. For 1397891/1397891 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 48440 event pairs, 841 based on Foata normal form. 4/7392 useless extension candidates. Maximal degree in co-relation 69855. Up to 6768 conditions per place. [2024-06-14 13:36:38,704 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 622 selfloop transitions, 103 changer transitions 0/730 dead transitions. [2024-06-14 13:36:38,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 730 transitions, 12512 flow [2024-06-14 13:36:38,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:36:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:36:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-14 13:36:38,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 13:36:38,705 INFO L175 Difference]: Start difference. First operand has 504 places, 691 transitions, 10461 flow. Second operand 8 states and 168 transitions. [2024-06-14 13:36:38,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 730 transitions, 12512 flow [2024-06-14 13:36:45,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 730 transitions, 11671 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-14 13:36:45,466 INFO L231 Difference]: Finished difference. Result has 502 places, 694 transitions, 9950 flow [2024-06-14 13:36:45,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9638, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9950, PETRI_PLACES=502, PETRI_TRANSITIONS=694} [2024-06-14 13:36:45,466 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 459 predicate places. [2024-06-14 13:36:45,466 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 694 transitions, 9950 flow [2024-06-14 13:36:45,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:45,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:45,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:45,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 13:36:45,467 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:36:45,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:45,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1939896851, now seen corresponding path program 2 times [2024-06-14 13:36:45,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:45,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830745350] [2024-06-14 13:36:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:45,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:46,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:46,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830745350] [2024-06-14 13:36:46,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830745350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:46,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:46,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:36:46,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754945743] [2024-06-14 13:36:46,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:46,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:36:46,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:46,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:36:46,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:36:46,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:36:46,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 694 transitions, 9950 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:46,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:46,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:36:46,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:48,376 INFO L124 PetriNetUnfolderBase]: 4634/7402 cut-off events. [2024-06-14 13:36:48,376 INFO L125 PetriNetUnfolderBase]: For 1392667/1392667 co-relation queries the response was YES. [2024-06-14 13:36:48,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68589 conditions, 7402 events. 4634/7402 cut-off events. For 1392667/1392667 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 48395 event pairs, 866 based on Foata normal form. 2/7402 useless extension candidates. Maximal degree in co-relation 68365. Up to 6985 conditions per place. [2024-06-14 13:36:48,514 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 661 selfloop transitions, 51 changer transitions 0/717 dead transitions. [2024-06-14 13:36:48,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 717 transitions, 11566 flow [2024-06-14 13:36:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:36:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:36:48,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-14 13:36:48,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-06-14 13:36:48,515 INFO L175 Difference]: Start difference. First operand has 502 places, 694 transitions, 9950 flow. Second operand 6 states and 124 transitions. [2024-06-14 13:36:48,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 717 transitions, 11566 flow [2024-06-14 13:36:54,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 717 transitions, 11328 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-14 13:36:54,811 INFO L231 Difference]: Finished difference. Result has 502 places, 698 transitions, 9976 flow [2024-06-14 13:36:54,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9712, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9976, PETRI_PLACES=502, PETRI_TRANSITIONS=698} [2024-06-14 13:36:54,812 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 459 predicate places. [2024-06-14 13:36:54,812 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 698 transitions, 9976 flow [2024-06-14 13:36:54,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:54,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:36:54,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:36:54,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 13:36:54,812 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:36:54,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:36:54,813 INFO L85 PathProgramCache]: Analyzing trace with hash 315850776, now seen corresponding path program 24 times [2024-06-14 13:36:54,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:36:54,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179231822] [2024-06-14 13:36:54,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:36:54,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:36:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:36:55,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:36:55,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:36:55,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179231822] [2024-06-14 13:36:55,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179231822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:36:55,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:36:55,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:36:55,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103517430] [2024-06-14 13:36:55,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:36:55,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:36:55,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:36:55,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:36:55,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:36:55,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:36:55,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 698 transitions, 9976 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:36:55,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:36:55,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:36:55,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:36:57,913 INFO L124 PetriNetUnfolderBase]: 4622/7378 cut-off events. [2024-06-14 13:36:57,913 INFO L125 PetriNetUnfolderBase]: For 1375840/1375840 co-relation queries the response was YES. [2024-06-14 13:36:58,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67958 conditions, 7378 events. 4622/7378 cut-off events. For 1375840/1375840 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 48241 event pairs, 1019 based on Foata normal form. 4/7380 useless extension candidates. Maximal degree in co-relation 67734. Up to 6945 conditions per place. [2024-06-14 13:36:58,046 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 672 selfloop transitions, 45 changer transitions 0/722 dead transitions. [2024-06-14 13:36:58,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 722 transitions, 11576 flow [2024-06-14 13:36:58,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:36:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:36:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-14 13:36:58,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 13:36:58,047 INFO L175 Difference]: Start difference. First operand has 502 places, 698 transitions, 9976 flow. Second operand 10 states and 180 transitions. [2024-06-14 13:36:58,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 722 transitions, 11576 flow [2024-06-14 13:37:04,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 722 transitions, 11392 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-14 13:37:04,799 INFO L231 Difference]: Finished difference. Result has 508 places, 698 transitions, 9888 flow [2024-06-14 13:37:04,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9792, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9888, PETRI_PLACES=508, PETRI_TRANSITIONS=698} [2024-06-14 13:37:04,799 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 465 predicate places. [2024-06-14 13:37:04,799 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 698 transitions, 9888 flow [2024-06-14 13:37:04,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:04,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:04,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:04,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 13:37:04,800 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:37:04,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:04,800 INFO L85 PathProgramCache]: Analyzing trace with hash -128214299, now seen corresponding path program 14 times [2024-06-14 13:37:04,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:04,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089490205] [2024-06-14 13:37:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:04,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:05,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:05,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089490205] [2024-06-14 13:37:05,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089490205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:05,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:05,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:05,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356069467] [2024-06-14 13:37:05,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:05,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:05,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:05,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:05,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:05,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:37:05,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 698 transitions, 9888 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:05,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:05,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:37:05,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:07,876 INFO L124 PetriNetUnfolderBase]: 4616/7383 cut-off events. [2024-06-14 13:37:07,876 INFO L125 PetriNetUnfolderBase]: For 1335490/1335490 co-relation queries the response was YES. [2024-06-14 13:37:07,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67363 conditions, 7383 events. 4616/7383 cut-off events. For 1335490/1335490 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 48381 event pairs, 863 based on Foata normal form. 2/7379 useless extension candidates. Maximal degree in co-relation 67139. Up to 6820 conditions per place. [2024-06-14 13:37:08,017 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 618 selfloop transitions, 101 changer transitions 0/724 dead transitions. [2024-06-14 13:37:08,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 724 transitions, 11428 flow [2024-06-14 13:37:08,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:37:08,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:37:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-14 13:37:08,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-14 13:37:08,018 INFO L175 Difference]: Start difference. First operand has 508 places, 698 transitions, 9888 flow. Second operand 8 states and 158 transitions. [2024-06-14 13:37:08,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 724 transitions, 11428 flow [2024-06-14 13:37:14,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 724 transitions, 11320 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-14 13:37:14,821 INFO L231 Difference]: Finished difference. Result has 510 places, 698 transitions, 10004 flow [2024-06-14 13:37:14,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9780, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10004, PETRI_PLACES=510, PETRI_TRANSITIONS=698} [2024-06-14 13:37:14,822 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 467 predicate places. [2024-06-14 13:37:14,822 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 698 transitions, 10004 flow [2024-06-14 13:37:14,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:14,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:14,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:14,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-14 13:37:14,822 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:37:14,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:14,822 INFO L85 PathProgramCache]: Analyzing trace with hash 509790186, now seen corresponding path program 25 times [2024-06-14 13:37:14,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:14,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200239568] [2024-06-14 13:37:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:14,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:15,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:15,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200239568] [2024-06-14 13:37:15,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200239568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:15,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:15,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:15,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513089675] [2024-06-14 13:37:15,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:15,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:15,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:15,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:15,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:15,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:37:15,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 698 transitions, 10004 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:15,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:15,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:37:15,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:17,620 INFO L124 PetriNetUnfolderBase]: 4604/7366 cut-off events. [2024-06-14 13:37:17,621 INFO L125 PetriNetUnfolderBase]: For 1333383/1333383 co-relation queries the response was YES. [2024-06-14 13:37:17,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66902 conditions, 7366 events. 4604/7366 cut-off events. For 1333383/1333383 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 48325 event pairs, 837 based on Foata normal form. 4/7368 useless extension candidates. Maximal degree in co-relation 66677. Up to 6750 conditions per place. [2024-06-14 13:37:17,753 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 620 selfloop transitions, 108 changer transitions 0/733 dead transitions. [2024-06-14 13:37:17,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 733 transitions, 11686 flow [2024-06-14 13:37:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:37:17,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:37:17,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-14 13:37:17,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-14 13:37:17,754 INFO L175 Difference]: Start difference. First operand has 510 places, 698 transitions, 10004 flow. Second operand 8 states and 166 transitions. [2024-06-14 13:37:17,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 733 transitions, 11686 flow [2024-06-14 13:37:23,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 733 transitions, 11366 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-14 13:37:23,573 INFO L231 Difference]: Finished difference. Result has 510 places, 698 transitions, 9918 flow [2024-06-14 13:37:23,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9684, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9918, PETRI_PLACES=510, PETRI_TRANSITIONS=698} [2024-06-14 13:37:23,573 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 467 predicate places. [2024-06-14 13:37:23,573 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 698 transitions, 9918 flow [2024-06-14 13:37:23,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:23,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:23,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:23,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-14 13:37:23,574 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:37:23,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:23,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1415673165, now seen corresponding path program 3 times [2024-06-14 13:37:23,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:23,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386631499] [2024-06-14 13:37:23,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:23,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:24,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:24,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386631499] [2024-06-14 13:37:24,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386631499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:24,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:24,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:24,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890937108] [2024-06-14 13:37:24,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:24,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:24,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:24,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:24,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:37:24,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 698 transitions, 9918 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:24,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:24,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:37:24,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:26,626 INFO L124 PetriNetUnfolderBase]: 4614/7380 cut-off events. [2024-06-14 13:37:26,627 INFO L125 PetriNetUnfolderBase]: For 1298648/1298648 co-relation queries the response was YES. [2024-06-14 13:37:26,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66864 conditions, 7380 events. 4614/7380 cut-off events. For 1298648/1298648 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 48359 event pairs, 836 based on Foata normal form. 2/7380 useless extension candidates. Maximal degree in co-relation 66640. Up to 6875 conditions per place. [2024-06-14 13:37:26,767 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 632 selfloop transitions, 89 changer transitions 0/726 dead transitions. [2024-06-14 13:37:26,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 726 transitions, 11598 flow [2024-06-14 13:37:26,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:37:26,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:37:26,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-14 13:37:26,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-06-14 13:37:26,768 INFO L175 Difference]: Start difference. First operand has 510 places, 698 transitions, 9918 flow. Second operand 7 states and 146 transitions. [2024-06-14 13:37:26,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 726 transitions, 11598 flow [2024-06-14 13:37:32,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 726 transitions, 11453 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 13:37:32,978 INFO L231 Difference]: Finished difference. Result has 511 places, 701 transitions, 10088 flow [2024-06-14 13:37:32,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9773, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10088, PETRI_PLACES=511, PETRI_TRANSITIONS=701} [2024-06-14 13:37:32,979 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 468 predicate places. [2024-06-14 13:37:32,979 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 701 transitions, 10088 flow [2024-06-14 13:37:32,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:32,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:32,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:32,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-14 13:37:32,979 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:37:32,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:32,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1195108144, now seen corresponding path program 26 times [2024-06-14 13:37:32,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:32,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693734936] [2024-06-14 13:37:32,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:32,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:33,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693734936] [2024-06-14 13:37:33,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693734936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:33,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:33,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:33,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506464035] [2024-06-14 13:37:33,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:33,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:33,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:33,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:33,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:33,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:37:33,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 701 transitions, 10088 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:33,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:33,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:37:33,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:35,899 INFO L124 PetriNetUnfolderBase]: 4634/7409 cut-off events. [2024-06-14 13:37:35,899 INFO L125 PetriNetUnfolderBase]: For 1323766/1323766 co-relation queries the response was YES. [2024-06-14 13:37:36,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67579 conditions, 7409 events. 4634/7409 cut-off events. For 1323766/1323766 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 48558 event pairs, 843 based on Foata normal form. 4/7407 useless extension candidates. Maximal degree in co-relation 67355. Up to 6447 conditions per place. [2024-06-14 13:37:36,045 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 580 selfloop transitions, 149 changer transitions 0/734 dead transitions. [2024-06-14 13:37:36,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 734 transitions, 12419 flow [2024-06-14 13:37:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:37:36,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:37:36,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-14 13:37:36,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-14 13:37:36,046 INFO L175 Difference]: Start difference. First operand has 511 places, 701 transitions, 10088 flow. Second operand 8 states and 160 transitions. [2024-06-14 13:37:36,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 734 transitions, 12419 flow [2024-06-14 13:37:42,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 734 transitions, 12215 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-14 13:37:42,078 INFO L231 Difference]: Finished difference. Result has 514 places, 704 transitions, 10275 flow [2024-06-14 13:37:42,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9888, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10275, PETRI_PLACES=514, PETRI_TRANSITIONS=704} [2024-06-14 13:37:42,079 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 471 predicate places. [2024-06-14 13:37:42,079 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 704 transitions, 10275 flow [2024-06-14 13:37:42,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:42,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:42,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:42,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-14 13:37:42,079 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:37:42,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:42,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1625086296, now seen corresponding path program 27 times [2024-06-14 13:37:42,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:42,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750214888] [2024-06-14 13:37:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:42,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:42,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:42,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:42,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750214888] [2024-06-14 13:37:42,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750214888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:42,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:42,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:42,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438368484] [2024-06-14 13:37:42,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:42,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:42,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:42,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:42,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:42,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:37:42,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 704 transitions, 10275 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:42,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:42,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:37:42,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:44,888 INFO L124 PetriNetUnfolderBase]: 4622/7399 cut-off events. [2024-06-14 13:37:44,888 INFO L125 PetriNetUnfolderBase]: For 1285949/1285949 co-relation queries the response was YES. [2024-06-14 13:37:44,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67044 conditions, 7399 events. 4622/7399 cut-off events. For 1285949/1285949 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 48603 event pairs, 829 based on Foata normal form. 4/7397 useless extension candidates. Maximal degree in co-relation 66820. Up to 6439 conditions per place. [2024-06-14 13:37:45,025 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 580 selfloop transitions, 151 changer transitions 0/736 dead transitions. [2024-06-14 13:37:45,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 736 transitions, 12255 flow [2024-06-14 13:37:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:37:45,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:37:45,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-14 13:37:45,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-14 13:37:45,028 INFO L175 Difference]: Start difference. First operand has 514 places, 704 transitions, 10275 flow. Second operand 8 states and 163 transitions. [2024-06-14 13:37:45,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 736 transitions, 12255 flow [2024-06-14 13:37:52,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 736 transitions, 11915 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-14 13:37:52,064 INFO L231 Difference]: Finished difference. Result has 518 places, 704 transitions, 10244 flow [2024-06-14 13:37:52,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9935, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10244, PETRI_PLACES=518, PETRI_TRANSITIONS=704} [2024-06-14 13:37:52,065 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 475 predicate places. [2024-06-14 13:37:52,065 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 704 transitions, 10244 flow [2024-06-14 13:37:52,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:52,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:52,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:52,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-14 13:37:52,066 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:37:52,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:52,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1029977561, now seen corresponding path program 4 times [2024-06-14 13:37:52,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:52,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255350799] [2024-06-14 13:37:52,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:52,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:52,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:52,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255350799] [2024-06-14 13:37:52,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255350799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:52,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:52,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:37:52,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949646080] [2024-06-14 13:37:52,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:52,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:37:52,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:52,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:37:52,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:37:52,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:37:52,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 704 transitions, 10244 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:52,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:52,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:37:52,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:54,939 INFO L124 PetriNetUnfolderBase]: 4624/7417 cut-off events. [2024-06-14 13:37:54,939 INFO L125 PetriNetUnfolderBase]: For 1271741/1271741 co-relation queries the response was YES. [2024-06-14 13:37:55,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66801 conditions, 7417 events. 4624/7417 cut-off events. For 1271741/1271741 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 48824 event pairs, 850 based on Foata normal form. 2/7417 useless extension candidates. Maximal degree in co-relation 66576. Up to 6985 conditions per place. [2024-06-14 13:37:55,076 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 670 selfloop transitions, 49 changer transitions 0/724 dead transitions. [2024-06-14 13:37:55,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 724 transitions, 11870 flow [2024-06-14 13:37:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:37:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:37:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-14 13:37:55,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-06-14 13:37:55,077 INFO L175 Difference]: Start difference. First operand has 518 places, 704 transitions, 10244 flow. Second operand 7 states and 134 transitions. [2024-06-14 13:37:55,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 724 transitions, 11870 flow [2024-06-14 13:38:01,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 724 transitions, 11561 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-14 13:38:01,592 INFO L231 Difference]: Finished difference. Result has 519 places, 707 transitions, 10163 flow [2024-06-14 13:38:01,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9935, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10163, PETRI_PLACES=519, PETRI_TRANSITIONS=707} [2024-06-14 13:38:01,592 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 476 predicate places. [2024-06-14 13:38:01,592 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 707 transitions, 10163 flow [2024-06-14 13:38:01,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:01,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:01,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:01,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-14 13:38:01,593 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:38:01,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:01,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1029969904, now seen corresponding path program 28 times [2024-06-14 13:38:01,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:01,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876778482] [2024-06-14 13:38:01,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:01,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:02,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:02,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876778482] [2024-06-14 13:38:02,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876778482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:02,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:02,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:38:02,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823373307] [2024-06-14 13:38:02,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:02,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:38:02,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:02,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:38:02,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:38:02,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:38:02,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 707 transitions, 10163 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:02,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:02,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:38:02,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:04,499 INFO L124 PetriNetUnfolderBase]: 4644/7437 cut-off events. [2024-06-14 13:38:04,499 INFO L125 PetriNetUnfolderBase]: For 1311720/1311720 co-relation queries the response was YES. [2024-06-14 13:38:04,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67218 conditions, 7437 events. 4644/7437 cut-off events. For 1311720/1311720 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 48875 event pairs, 851 based on Foata normal form. 4/7439 useless extension candidates. Maximal degree in co-relation 66992. Up to 6999 conditions per place. [2024-06-14 13:38:04,651 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 684 selfloop transitions, 41 changer transitions 0/730 dead transitions. [2024-06-14 13:38:04,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 730 transitions, 11824 flow [2024-06-14 13:38:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:38:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:38:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-14 13:38:04,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-14 13:38:04,651 INFO L175 Difference]: Start difference. First operand has 519 places, 707 transitions, 10163 flow. Second operand 8 states and 147 transitions. [2024-06-14 13:38:04,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 730 transitions, 11824 flow [2024-06-14 13:38:11,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 730 transitions, 11626 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-14 13:38:11,089 INFO L231 Difference]: Finished difference. Result has 519 places, 710 transitions, 10154 flow [2024-06-14 13:38:11,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9965, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10154, PETRI_PLACES=519, PETRI_TRANSITIONS=710} [2024-06-14 13:38:11,090 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 476 predicate places. [2024-06-14 13:38:11,090 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 710 transitions, 10154 flow [2024-06-14 13:38:11,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:11,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:11,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:11,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-14 13:38:11,090 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:38:11,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:11,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1244186202, now seen corresponding path program 29 times [2024-06-14 13:38:11,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:11,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70335008] [2024-06-14 13:38:11,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:11,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:11,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:11,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70335008] [2024-06-14 13:38:11,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70335008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:11,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:11,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:38:11,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366867827] [2024-06-14 13:38:11,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:11,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:38:11,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:11,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:38:11,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:38:11,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:38:11,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 710 transitions, 10154 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:11,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:11,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:38:11,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:14,017 INFO L124 PetriNetUnfolderBase]: 4664/7475 cut-off events. [2024-06-14 13:38:14,017 INFO L125 PetriNetUnfolderBase]: For 1313889/1313889 co-relation queries the response was YES. [2024-06-14 13:38:14,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67445 conditions, 7475 events. 4664/7475 cut-off events. For 1313889/1313889 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 49243 event pairs, 853 based on Foata normal form. 4/7477 useless extension candidates. Maximal degree in co-relation 67220. Up to 6803 conditions per place. [2024-06-14 13:38:14,151 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 648 selfloop transitions, 87 changer transitions 0/740 dead transitions. [2024-06-14 13:38:14,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 740 transitions, 12183 flow [2024-06-14 13:38:14,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:38:14,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:38:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-14 13:38:14,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-14 13:38:14,152 INFO L175 Difference]: Start difference. First operand has 519 places, 710 transitions, 10154 flow. Second operand 8 states and 157 transitions. [2024-06-14 13:38:14,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 740 transitions, 12183 flow [2024-06-14 13:38:20,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 740 transitions, 12037 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-14 13:38:20,829 INFO L231 Difference]: Finished difference. Result has 520 places, 713 transitions, 10291 flow [2024-06-14 13:38:20,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10010, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10291, PETRI_PLACES=520, PETRI_TRANSITIONS=713} [2024-06-14 13:38:20,829 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 477 predicate places. [2024-06-14 13:38:20,829 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 713 transitions, 10291 flow [2024-06-14 13:38:20,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:20,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:20,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:20,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-14 13:38:20,830 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:38:20,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:20,830 INFO L85 PathProgramCache]: Analyzing trace with hash 73867566, now seen corresponding path program 30 times [2024-06-14 13:38:20,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:20,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029752020] [2024-06-14 13:38:20,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:20,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:21,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:21,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:21,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029752020] [2024-06-14 13:38:21,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029752020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:21,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:21,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:38:21,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377847278] [2024-06-14 13:38:21,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:21,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:38:21,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:21,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:38:21,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:38:21,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:38:21,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 713 transitions, 10291 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:21,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:21,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:38:21,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:23,726 INFO L124 PetriNetUnfolderBase]: 4652/7447 cut-off events. [2024-06-14 13:38:23,726 INFO L125 PetriNetUnfolderBase]: For 1272861/1272861 co-relation queries the response was YES. [2024-06-14 13:38:23,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66697 conditions, 7447 events. 4652/7447 cut-off events. For 1272861/1272861 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 48947 event pairs, 825 based on Foata normal form. 4/7449 useless extension candidates. Maximal degree in co-relation 66472. Up to 6795 conditions per place. [2024-06-14 13:38:23,871 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 645 selfloop transitions, 92 changer transitions 0/742 dead transitions. [2024-06-14 13:38:23,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 742 transitions, 11951 flow [2024-06-14 13:38:23,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:38:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:38:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-14 13:38:23,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-14 13:38:23,872 INFO L175 Difference]: Start difference. First operand has 520 places, 713 transitions, 10291 flow. Second operand 8 states and 159 transitions. [2024-06-14 13:38:23,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 742 transitions, 11951 flow [2024-06-14 13:38:30,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 742 transitions, 11578 flow, removed 71 selfloop flow, removed 7 redundant places. [2024-06-14 13:38:30,459 INFO L231 Difference]: Finished difference. Result has 521 places, 713 transitions, 10114 flow [2024-06-14 13:38:30,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9918, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10114, PETRI_PLACES=521, PETRI_TRANSITIONS=713} [2024-06-14 13:38:30,460 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 478 predicate places. [2024-06-14 13:38:30,460 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 713 transitions, 10114 flow [2024-06-14 13:38:30,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:30,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:30,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:30,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-14 13:38:30,460 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:38:30,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:30,461 INFO L85 PathProgramCache]: Analyzing trace with hash 558591501, now seen corresponding path program 15 times [2024-06-14 13:38:30,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:30,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507155729] [2024-06-14 13:38:30,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:30,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:31,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:31,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:31,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507155729] [2024-06-14 13:38:31,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507155729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:31,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:31,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:38:31,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141220006] [2024-06-14 13:38:31,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:31,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:38:31,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:31,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:38:31,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:38:31,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:38:31,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 713 transitions, 10114 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:31,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:31,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:38:31,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:33,512 INFO L124 PetriNetUnfolderBase]: 4661/7458 cut-off events. [2024-06-14 13:38:33,513 INFO L125 PetriNetUnfolderBase]: For 1247807/1247807 co-relation queries the response was YES. [2024-06-14 13:38:33,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66218 conditions, 7458 events. 4661/7458 cut-off events. For 1247807/1247807 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 49054 event pairs, 873 based on Foata normal form. 4/7460 useless extension candidates. Maximal degree in co-relation 65993. Up to 6878 conditions per place. [2024-06-14 13:38:33,653 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 639 selfloop transitions, 103 changer transitions 0/747 dead transitions. [2024-06-14 13:38:33,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 747 transitions, 11907 flow [2024-06-14 13:38:33,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:38:33,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:38:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-14 13:38:33,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-14 13:38:33,654 INFO L175 Difference]: Start difference. First operand has 521 places, 713 transitions, 10114 flow. Second operand 8 states and 158 transitions. [2024-06-14 13:38:33,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 747 transitions, 11907 flow [2024-06-14 13:38:40,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 747 transitions, 11478 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-14 13:38:40,288 INFO L231 Difference]: Finished difference. Result has 522 places, 722 transitions, 10246 flow [2024-06-14 13:38:40,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9685, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10246, PETRI_PLACES=522, PETRI_TRANSITIONS=722} [2024-06-14 13:38:40,288 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 479 predicate places. [2024-06-14 13:38:40,288 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 722 transitions, 10246 flow [2024-06-14 13:38:40,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:40,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:40,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:40,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-14 13:38:40,289 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:38:40,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:40,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1150136058, now seen corresponding path program 1 times [2024-06-14 13:38:40,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:40,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076508016] [2024-06-14 13:38:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:40,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:41,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:41,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076508016] [2024-06-14 13:38:41,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076508016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:41,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:41,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:38:41,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023228475] [2024-06-14 13:38:41,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:41,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:38:41,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:41,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:38:41,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:38:41,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:38:41,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 722 transitions, 10246 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:41,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:41,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:38:41,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:43,818 INFO L124 PetriNetUnfolderBase]: 4669/7456 cut-off events. [2024-06-14 13:38:43,818 INFO L125 PetriNetUnfolderBase]: For 1245803/1245803 co-relation queries the response was YES. [2024-06-14 13:38:43,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66406 conditions, 7456 events. 4669/7456 cut-off events. For 1245803/1245803 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 48949 event pairs, 990 based on Foata normal form. 2/7456 useless extension candidates. Maximal degree in co-relation 66179. Up to 7069 conditions per place. [2024-06-14 13:38:43,941 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 701 selfloop transitions, 41 changer transitions 0/747 dead transitions. [2024-06-14 13:38:43,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 747 transitions, 11928 flow [2024-06-14 13:38:43,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:38:43,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:38:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-14 13:38:43,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-14 13:38:43,943 INFO L175 Difference]: Start difference. First operand has 522 places, 722 transitions, 10246 flow. Second operand 11 states and 186 transitions. [2024-06-14 13:38:43,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 747 transitions, 11928 flow [2024-06-14 13:38:50,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 747 transitions, 11669 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-14 13:38:50,481 INFO L231 Difference]: Finished difference. Result has 526 places, 726 transitions, 10221 flow [2024-06-14 13:38:50,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9987, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10221, PETRI_PLACES=526, PETRI_TRANSITIONS=726} [2024-06-14 13:38:50,481 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 483 predicate places. [2024-06-14 13:38:50,481 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 726 transitions, 10221 flow [2024-06-14 13:38:50,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:50,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:50,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:50,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-14 13:38:50,482 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:38:50,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:50,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1159181800, now seen corresponding path program 2 times [2024-06-14 13:38:50,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:50,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931368871] [2024-06-14 13:38:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:50,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:51,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:51,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931368871] [2024-06-14 13:38:51,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931368871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:51,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:51,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:38:51,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844761593] [2024-06-14 13:38:51,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:51,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:38:51,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:51,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:38:51,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:38:51,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:38:51,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 726 transitions, 10221 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:51,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:51,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:38:51,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:53,528 INFO L124 PetriNetUnfolderBase]: 4677/7456 cut-off events. [2024-06-14 13:38:53,529 INFO L125 PetriNetUnfolderBase]: For 1184509/1184509 co-relation queries the response was YES. [2024-06-14 13:38:53,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65961 conditions, 7456 events. 4677/7456 cut-off events. For 1184509/1184509 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 48875 event pairs, 1032 based on Foata normal form. 2/7456 useless extension candidates. Maximal degree in co-relation 65736. Up to 7085 conditions per place. [2024-06-14 13:38:53,659 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 705 selfloop transitions, 36 changer transitions 0/746 dead transitions. [2024-06-14 13:38:53,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 746 transitions, 11837 flow [2024-06-14 13:38:53,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:38:53,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:38:53,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-14 13:38:53,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:38:53,660 INFO L175 Difference]: Start difference. First operand has 526 places, 726 transitions, 10221 flow. Second operand 7 states and 133 transitions. [2024-06-14 13:38:53,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 746 transitions, 11837 flow [2024-06-14 13:39:00,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 746 transitions, 11669 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-14 13:39:00,084 INFO L231 Difference]: Finished difference. Result has 526 places, 728 transitions, 10212 flow [2024-06-14 13:39:00,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10053, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=690, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10212, PETRI_PLACES=526, PETRI_TRANSITIONS=728} [2024-06-14 13:39:00,084 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 483 predicate places. [2024-06-14 13:39:00,084 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 728 transitions, 10212 flow [2024-06-14 13:39:00,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:00,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:00,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:00,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-14 13:39:00,085 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:39:00,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:00,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1159189240, now seen corresponding path program 3 times [2024-06-14 13:39:00,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:00,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391104005] [2024-06-14 13:39:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:00,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:00,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:00,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391104005] [2024-06-14 13:39:00,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391104005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:00,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:00,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:39:00,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284932203] [2024-06-14 13:39:00,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:00,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:39:00,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:00,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:39:00,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:39:01,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:39:01,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 728 transitions, 10212 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:01,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:01,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:39:01,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:02,993 INFO L124 PetriNetUnfolderBase]: 4685/7462 cut-off events. [2024-06-14 13:39:02,993 INFO L125 PetriNetUnfolderBase]: For 1202790/1202790 co-relation queries the response was YES. [2024-06-14 13:39:03,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66178 conditions, 7462 events. 4685/7462 cut-off events. For 1202790/1202790 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 48802 event pairs, 1036 based on Foata normal form. 2/7462 useless extension candidates. Maximal degree in co-relation 65951. Up to 7081 conditions per place. [2024-06-14 13:39:03,125 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 704 selfloop transitions, 36 changer transitions 0/745 dead transitions. [2024-06-14 13:39:03,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 745 transitions, 11816 flow [2024-06-14 13:39:03,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:39:03,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:39:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-14 13:39:03,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-06-14 13:39:03,126 INFO L175 Difference]: Start difference. First operand has 526 places, 728 transitions, 10212 flow. Second operand 7 states and 129 transitions. [2024-06-14 13:39:03,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 745 transitions, 11816 flow [2024-06-14 13:39:09,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 745 transitions, 11675 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-14 13:39:09,734 INFO L231 Difference]: Finished difference. Result has 528 places, 730 transitions, 10232 flow [2024-06-14 13:39:09,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10071, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10232, PETRI_PLACES=528, PETRI_TRANSITIONS=730} [2024-06-14 13:39:09,734 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 485 predicate places. [2024-06-14 13:39:09,734 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 730 transitions, 10232 flow [2024-06-14 13:39:09,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:09,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:09,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:09,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-14 13:39:09,735 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:39:09,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:09,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1415682310, now seen corresponding path program 4 times [2024-06-14 13:39:09,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:09,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417244659] [2024-06-14 13:39:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:09,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:10,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:10,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417244659] [2024-06-14 13:39:10,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417244659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:10,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:10,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:39:10,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793917631] [2024-06-14 13:39:10,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:10,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:39:10,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:10,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:39:10,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:39:10,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:39:10,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 730 transitions, 10232 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:10,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:10,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:39:10,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:12,829 INFO L124 PetriNetUnfolderBase]: 4693/7474 cut-off events. [2024-06-14 13:39:12,829 INFO L125 PetriNetUnfolderBase]: For 1219341/1219341 co-relation queries the response was YES. [2024-06-14 13:39:12,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66415 conditions, 7474 events. 4693/7474 cut-off events. For 1219341/1219341 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 48861 event pairs, 1037 based on Foata normal form. 2/7474 useless extension candidates. Maximal degree in co-relation 66187. Up to 7094 conditions per place. [2024-06-14 13:39:12,981 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 699 selfloop transitions, 46 changer transitions 0/750 dead transitions. [2024-06-14 13:39:12,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 750 transitions, 11864 flow [2024-06-14 13:39:12,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:39:12,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:39:12,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-14 13:39:12,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557823129251701 [2024-06-14 13:39:12,982 INFO L175 Difference]: Start difference. First operand has 528 places, 730 transitions, 10232 flow. Second operand 7 states and 134 transitions. [2024-06-14 13:39:12,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 750 transitions, 11864 flow [2024-06-14 13:39:19,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 750 transitions, 11721 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-14 13:39:19,118 INFO L231 Difference]: Finished difference. Result has 530 places, 732 transitions, 10279 flow [2024-06-14 13:39:19,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10089, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=684, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10279, PETRI_PLACES=530, PETRI_TRANSITIONS=732} [2024-06-14 13:39:19,119 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 487 predicate places. [2024-06-14 13:39:19,119 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 732 transitions, 10279 flow [2024-06-14 13:39:19,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:19,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:19,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:19,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-14 13:39:19,120 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:39:19,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash 517165148, now seen corresponding path program 5 times [2024-06-14 13:39:19,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:19,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499054101] [2024-06-14 13:39:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:19,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:20,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:20,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:20,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499054101] [2024-06-14 13:39:20,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499054101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:20,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:20,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:39:20,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987543692] [2024-06-14 13:39:20,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:20,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:39:20,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:20,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:39:20,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:39:20,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:39:20,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 732 transitions, 10279 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:20,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:20,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:39:20,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:22,423 INFO L124 PetriNetUnfolderBase]: 4701/7494 cut-off events. [2024-06-14 13:39:22,424 INFO L125 PetriNetUnfolderBase]: For 1236038/1236038 co-relation queries the response was YES. [2024-06-14 13:39:22,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66693 conditions, 7494 events. 4701/7494 cut-off events. For 1236038/1236038 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 49118 event pairs, 1037 based on Foata normal form. 2/7494 useless extension candidates. Maximal degree in co-relation 66465. Up to 7076 conditions per place. [2024-06-14 13:39:22,547 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 695 selfloop transitions, 49 changer transitions 0/749 dead transitions. [2024-06-14 13:39:22,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 749 transitions, 11899 flow [2024-06-14 13:39:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:39:22,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:39:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-14 13:39:22,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421768707482993 [2024-06-14 13:39:22,548 INFO L175 Difference]: Start difference. First operand has 530 places, 732 transitions, 10279 flow. Second operand 7 states and 130 transitions. [2024-06-14 13:39:22,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 749 transitions, 11899 flow [2024-06-14 13:39:28,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 749 transitions, 11729 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-14 13:39:28,837 INFO L231 Difference]: Finished difference. Result has 532 places, 734 transitions, 10307 flow [2024-06-14 13:39:28,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10113, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10307, PETRI_PLACES=532, PETRI_TRANSITIONS=734} [2024-06-14 13:39:28,837 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 489 predicate places. [2024-06-14 13:39:28,837 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 734 transitions, 10307 flow [2024-06-14 13:39:28,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:28,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:28,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:28,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-14 13:39:28,837 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:39:28,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:28,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1424886520, now seen corresponding path program 6 times [2024-06-14 13:39:28,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:28,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084531605] [2024-06-14 13:39:28,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:28,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:29,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:29,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:29,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084531605] [2024-06-14 13:39:29,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084531605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:29,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:29,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:39:29,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057674495] [2024-06-14 13:39:29,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:29,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:39:29,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:29,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:39:29,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:39:29,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:39:29,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 734 transitions, 10307 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:29,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:29,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:39:29,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:31,927 INFO L124 PetriNetUnfolderBase]: 4696/7501 cut-off events. [2024-06-14 13:39:31,927 INFO L125 PetriNetUnfolderBase]: For 1214526/1214526 co-relation queries the response was YES. [2024-06-14 13:39:32,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66205 conditions, 7501 events. 4696/7501 cut-off events. For 1214526/1214526 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 49254 event pairs, 1040 based on Foata normal form. 2/7501 useless extension candidates. Maximal degree in co-relation 65976. Up to 7157 conditions per place. [2024-06-14 13:39:32,065 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 726 selfloop transitions, 17 changer transitions 0/748 dead transitions. [2024-06-14 13:39:32,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 748 transitions, 11911 flow [2024-06-14 13:39:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:39:32,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:39:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-14 13:39:32,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-14 13:39:32,066 INFO L175 Difference]: Start difference. First operand has 532 places, 734 transitions, 10307 flow. Second operand 7 states and 122 transitions. [2024-06-14 13:39:32,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 748 transitions, 11911 flow [2024-06-14 13:39:38,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 748 transitions, 11748 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-14 13:39:38,130 INFO L231 Difference]: Finished difference. Result has 535 places, 736 transitions, 10275 flow [2024-06-14 13:39:38,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10148, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=717, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10275, PETRI_PLACES=535, PETRI_TRANSITIONS=736} [2024-06-14 13:39:38,130 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 492 predicate places. [2024-06-14 13:39:38,131 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 736 transitions, 10275 flow [2024-06-14 13:39:38,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:38,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:38,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:38,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-14 13:39:38,131 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:39:38,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:38,131 INFO L85 PathProgramCache]: Analyzing trace with hash -681554418, now seen corresponding path program 1 times [2024-06-14 13:39:38,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:38,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567720983] [2024-06-14 13:39:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:38,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:39,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:39,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567720983] [2024-06-14 13:39:39,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567720983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:39,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:39,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:39:39,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417069058] [2024-06-14 13:39:39,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:39,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:39:39,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:39,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:39:39,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:39:39,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:39:39,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 736 transitions, 10275 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:39,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:39,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:39:39,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:41,246 INFO L124 PetriNetUnfolderBase]: 4701/7508 cut-off events. [2024-06-14 13:39:41,246 INFO L125 PetriNetUnfolderBase]: For 1202799/1202799 co-relation queries the response was YES. [2024-06-14 13:39:41,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66093 conditions, 7508 events. 4701/7508 cut-off events. For 1202799/1202799 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 49292 event pairs, 860 based on Foata normal form. 1/7507 useless extension candidates. Maximal degree in co-relation 65863. Up to 7058 conditions per place. [2024-06-14 13:39:41,386 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 708 selfloop transitions, 55 changer transitions 0/768 dead transitions. [2024-06-14 13:39:41,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 768 transitions, 12281 flow [2024-06-14 13:39:41,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:39:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:39:41,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-14 13:39:41,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-14 13:39:41,387 INFO L175 Difference]: Start difference. First operand has 535 places, 736 transitions, 10275 flow. Second operand 9 states and 171 transitions. [2024-06-14 13:39:41,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 768 transitions, 12281 flow [2024-06-14 13:39:48,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 768 transitions, 12170 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-14 13:39:48,049 INFO L231 Difference]: Finished difference. Result has 539 places, 739 transitions, 10389 flow [2024-06-14 13:39:48,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10164, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=684, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10389, PETRI_PLACES=539, PETRI_TRANSITIONS=739} [2024-06-14 13:39:48,049 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 496 predicate places. [2024-06-14 13:39:48,050 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 739 transitions, 10389 flow [2024-06-14 13:39:48,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:48,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:48,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:48,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-14 13:39:48,050 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:39:48,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2109284360, now seen corresponding path program 1 times [2024-06-14 13:39:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:48,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418312511] [2024-06-14 13:39:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:48,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:48,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:48,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418312511] [2024-06-14 13:39:48,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418312511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:48,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:48,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:39:48,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715825825] [2024-06-14 13:39:48,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:48,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:39:48,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:48,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:39:48,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:39:49,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:39:49,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 739 transitions, 10389 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:49,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:49,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:39:49,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:51,148 INFO L124 PetriNetUnfolderBase]: 4719/7533 cut-off events. [2024-06-14 13:39:51,148 INFO L125 PetriNetUnfolderBase]: For 1240023/1240023 co-relation queries the response was YES. [2024-06-14 13:39:51,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66718 conditions, 7533 events. 4719/7533 cut-off events. For 1240023/1240023 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 49433 event pairs, 856 based on Foata normal form. 2/7533 useless extension candidates. Maximal degree in co-relation 66487. Up to 7067 conditions per place. [2024-06-14 13:39:51,286 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 714 selfloop transitions, 61 changer transitions 0/780 dead transitions. [2024-06-14 13:39:51,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 780 transitions, 12611 flow [2024-06-14 13:39:51,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:39:51,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:39:51,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-14 13:39:51,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2024-06-14 13:39:51,287 INFO L175 Difference]: Start difference. First operand has 539 places, 739 transitions, 10389 flow. Second operand 9 states and 173 transitions. [2024-06-14 13:39:51,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 780 transitions, 12611 flow [2024-06-14 13:39:57,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 780 transitions, 12273 flow, removed 76 selfloop flow, removed 7 redundant places. [2024-06-14 13:39:57,856 INFO L231 Difference]: Finished difference. Result has 542 places, 752 transitions, 10520 flow [2024-06-14 13:39:57,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10051, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10520, PETRI_PLACES=542, PETRI_TRANSITIONS=752} [2024-06-14 13:39:57,856 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 499 predicate places. [2024-06-14 13:39:57,856 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 752 transitions, 10520 flow [2024-06-14 13:39:57,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:57,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:57,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:57,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-14 13:39:57,857 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:39:57,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:57,857 INFO L85 PathProgramCache]: Analyzing trace with hash -100799652, now seen corresponding path program 2 times [2024-06-14 13:39:57,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:57,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226580245] [2024-06-14 13:39:57,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:57,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:58,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:58,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226580245] [2024-06-14 13:39:58,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226580245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:58,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:58,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:39:58,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408893253] [2024-06-14 13:39:58,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:58,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:39:58,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:58,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:39:58,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:39:58,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:39:58,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 752 transitions, 10520 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:58,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:58,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:39:58,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:40:01,163 INFO L124 PetriNetUnfolderBase]: 4716/7535 cut-off events. [2024-06-14 13:40:01,164 INFO L125 PetriNetUnfolderBase]: For 1241163/1241163 co-relation queries the response was YES. [2024-06-14 13:40:01,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67179 conditions, 7535 events. 4716/7535 cut-off events. For 1241163/1241163 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 49489 event pairs, 855 based on Foata normal form. 1/7534 useless extension candidates. Maximal degree in co-relation 66946. Up to 7106 conditions per place. [2024-06-14 13:40:01,298 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 727 selfloop transitions, 45 changer transitions 0/777 dead transitions. [2024-06-14 13:40:01,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 777 transitions, 12140 flow [2024-06-14 13:40:01,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:40:01,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:40:01,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-14 13:40:01,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-06-14 13:40:01,299 INFO L175 Difference]: Start difference. First operand has 542 places, 752 transitions, 10520 flow. Second operand 9 states and 166 transitions. [2024-06-14 13:40:01,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 777 transitions, 12140 flow [2024-06-14 13:40:08,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 777 transitions, 11856 flow, removed 110 selfloop flow, removed 4 redundant places. [2024-06-14 13:40:08,373 INFO L231 Difference]: Finished difference. Result has 547 places, 752 transitions, 10332 flow [2024-06-14 13:40:08,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10236, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10332, PETRI_PLACES=547, PETRI_TRANSITIONS=752} [2024-06-14 13:40:08,373 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 504 predicate places. [2024-06-14 13:40:08,374 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 752 transitions, 10332 flow [2024-06-14 13:40:08,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:08,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:40:08,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:40:08,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-14 13:40:08,374 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:40:08,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:40:08,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2008314266, now seen corresponding path program 2 times [2024-06-14 13:40:08,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:40:08,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815517934] [2024-06-14 13:40:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:40:08,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:40:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:40:09,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:40:09,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:40:09,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815517934] [2024-06-14 13:40:09,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815517934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:40:09,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:40:09,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:40:09,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494625505] [2024-06-14 13:40:09,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:40:09,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:40:09,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:40:09,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:40:09,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:40:09,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:40:09,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 752 transitions, 10332 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:09,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:40:09,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:40:09,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:40:11,602 INFO L124 PetriNetUnfolderBase]: 4736/7559 cut-off events. [2024-06-14 13:40:11,602 INFO L125 PetriNetUnfolderBase]: For 1265961/1265961 co-relation queries the response was YES. [2024-06-14 13:40:11,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67265 conditions, 7559 events. 4736/7559 cut-off events. For 1265961/1265961 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 49573 event pairs, 854 based on Foata normal form. 2/7559 useless extension candidates. Maximal degree in co-relation 67031. Up to 7135 conditions per place. [2024-06-14 13:40:11,746 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 723 selfloop transitions, 56 changer transitions 0/784 dead transitions. [2024-06-14 13:40:11,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 784 transitions, 12121 flow [2024-06-14 13:40:11,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:40:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:40:11,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-14 13:40:11,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-06-14 13:40:11,747 INFO L175 Difference]: Start difference. First operand has 547 places, 752 transitions, 10332 flow. Second operand 9 states and 166 transitions. [2024-06-14 13:40:11,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 784 transitions, 12121 flow [2024-06-14 13:40:17,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 784 transitions, 11980 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 13:40:17,421 INFO L231 Difference]: Finished difference. Result has 549 places, 761 transitions, 10480 flow [2024-06-14 13:40:17,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10198, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10480, PETRI_PLACES=549, PETRI_TRANSITIONS=761} [2024-06-14 13:40:17,421 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 506 predicate places. [2024-06-14 13:40:17,421 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 761 transitions, 10480 flow [2024-06-14 13:40:17,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:17,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:40:17,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:40:17,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-14 13:40:17,422 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:40:17,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:40:17,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2008551416, now seen corresponding path program 3 times [2024-06-14 13:40:17,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:40:17,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892363034] [2024-06-14 13:40:17,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:40:17,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:40:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:40:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:40:18,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:40:18,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892363034] [2024-06-14 13:40:18,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892363034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:40:18,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:40:18,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:40:18,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138007949] [2024-06-14 13:40:18,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:40:18,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:40:18,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:40:18,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:40:18,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:40:18,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:40:18,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 761 transitions, 10480 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:18,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:40:18,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:40:18,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:40:20,534 INFO L124 PetriNetUnfolderBase]: 4751/7582 cut-off events. [2024-06-14 13:40:20,534 INFO L125 PetriNetUnfolderBase]: For 1282421/1282421 co-relation queries the response was YES. [2024-06-14 13:40:20,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67589 conditions, 7582 events. 4751/7582 cut-off events. For 1282421/1282421 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 49815 event pairs, 860 based on Foata normal form. 2/7582 useless extension candidates. Maximal degree in co-relation 67353. Up to 7147 conditions per place. [2024-06-14 13:40:20,681 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 725 selfloop transitions, 61 changer transitions 0/791 dead transitions. [2024-06-14 13:40:20,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 791 transitions, 12248 flow [2024-06-14 13:40:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:40:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:40:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-14 13:40:20,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-14 13:40:20,693 INFO L175 Difference]: Start difference. First operand has 549 places, 761 transitions, 10480 flow. Second operand 9 states and 169 transitions. [2024-06-14 13:40:20,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 791 transitions, 12248 flow [2024-06-14 13:40:27,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 791 transitions, 12080 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-14 13:40:28,004 INFO L231 Difference]: Finished difference. Result has 554 places, 767 transitions, 10574 flow [2024-06-14 13:40:28,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10312, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10574, PETRI_PLACES=554, PETRI_TRANSITIONS=767} [2024-06-14 13:40:28,005 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 511 predicate places. [2024-06-14 13:40:28,005 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 767 transitions, 10574 flow [2024-06-14 13:40:28,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:28,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:40:28,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:40:28,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-14 13:40:28,005 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:40:28,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:40:28,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1035675162, now seen corresponding path program 4 times [2024-06-14 13:40:28,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:40:28,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538079808] [2024-06-14 13:40:28,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:40:28,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:40:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:40:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:40:28,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:40:28,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538079808] [2024-06-14 13:40:28,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538079808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:40:28,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:40:28,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:40:28,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483301439] [2024-06-14 13:40:28,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:40:28,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:40:28,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:40:28,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:40:28,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:40:28,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:40:28,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 767 transitions, 10574 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:28,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:40:28,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:40:28,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:40:31,353 INFO L124 PetriNetUnfolderBase]: 4782/7623 cut-off events. [2024-06-14 13:40:31,353 INFO L125 PetriNetUnfolderBase]: For 1321344/1321344 co-relation queries the response was YES. [2024-06-14 13:40:31,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68452 conditions, 7623 events. 4782/7623 cut-off events. For 1321344/1321344 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 50049 event pairs, 865 based on Foata normal form. 2/7623 useless extension candidates. Maximal degree in co-relation 68214. Up to 7187 conditions per place. [2024-06-14 13:40:31,488 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 733 selfloop transitions, 58 changer transitions 0/796 dead transitions. [2024-06-14 13:40:31,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 796 transitions, 12737 flow [2024-06-14 13:40:31,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:40:31,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:40:31,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-14 13:40:31,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-14 13:40:31,489 INFO L175 Difference]: Start difference. First operand has 554 places, 767 transitions, 10574 flow. Second operand 9 states and 165 transitions. [2024-06-14 13:40:31,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 796 transitions, 12737 flow [2024-06-14 13:40:38,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 796 transitions, 12547 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-14 13:40:38,208 INFO L231 Difference]: Finished difference. Result has 558 places, 777 transitions, 10751 flow [2024-06-14 13:40:38,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10386, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10751, PETRI_PLACES=558, PETRI_TRANSITIONS=777} [2024-06-14 13:40:38,209 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 515 predicate places. [2024-06-14 13:40:38,209 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 777 transitions, 10751 flow [2024-06-14 13:40:38,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:38,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:40:38,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:40:38,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-14 13:40:38,209 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 13:40:38,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:40:38,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1884048448, now seen corresponding path program 5 times [2024-06-14 13:40:38,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:40:38,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399893433] [2024-06-14 13:40:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:40:38,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:40:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:40:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:40:39,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:40:39,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399893433] [2024-06-14 13:40:39,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399893433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:40:39,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:40:39,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:40:39,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495765079] [2024-06-14 13:40:39,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:40:39,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:40:39,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:40:39,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:40:39,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:40:39,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-14 13:40:39,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 777 transitions, 10751 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:39,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:40:39,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-14 13:40:39,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15